BoP Labbeta

BoP Lab / Classes / B-Spec

B-Spec vs SM vs T3 vs F5 pace at every track

Lap times across years say as much about the weather as the class. % of B-Spec is each class's best lap as a share of B-Spec's on the same day, so the conditions drop out: 100% is level, less is quicker, and a move in it is the class getting faster or slower against the field.

Class · click a class to switch, + to compare alongside (up to 4: remove one to add another)
ASB-Spec×EPvsF5×FAFCFE2FFFPFVFXGT1GT2GTXHPPP2vsSM×SMXSRF3STLSTUT1T2vsT3×T4Show 50 inactive classes
Series
Reference · what % is measured against
Tracks · untick to narrow

Closest to the field: B-Spec 100.0% of B-Spec John Heinricy, Daytona International Speedway Runoffs 2015 race · SM 92.8% of B-Spec Andrew Carbonell, Daytona International Speedway Runoffs 2015 qualifying · T3 59.2% of B-Spec Mark Drennan, Sonoma Raceway Runoffs 2018 qualifying · F5 81.6% of B-Spec W. Clint McMahan, Daytona International Speedway Runoffs 2015 qualifying

1:402:002:202:403:0042 rule changes between Runoffs 2018 and Runoffs 201942 ▾51 rule changes between Runoffs 2019 and Runoffs 202051 ▾45 rule changes between Runoffs 2020 and Runoffs 202145 ▾48 rule changes between Runoffs 2021 and Runoffs 202248 ▾50 rule changes between Runoffs 2022 and Runoffs 202350 ▾75 rule changes between Runoffs 2023 and Runoffs 202475 ▾51 rule changes between Runoffs 2024 and Runoffs 202551 ▾50 rule changes between Runoffs 2025 and Runoffs 202650 ▾B-Spec race best at Runoffs 2015: 2:29.465 (John Heinricy)B-Spec race best at Runoffs 2016: 1:46.930 (John Heinricy)B-Spec race best at Runoffs 2017: 2:04.050 (David Daughtery)B-Spec race best at Runoffs 2018: 1:59.852 (Jake Pipal)B-Spec race best at Runoffs 2019: 2:22.094 (David Daughtery)B-Spec race best at Runoffs 2020: 2:52.847 (Riley Salyer)B-Spec race best at Runoffs 2021: 2:03.971 (Steve Introne)B-Spec race best at Runoffs 2022: 2:23.819 (Riley Salyer)B-Spec race best at Runoffs 2023: 2:23.732 (Richard Hromin)B-Spec race best at Runoffs 2024: 2:51.889 (Rob Piekarczyk)B-Spec race best at Runoffs 2025: 2:53.613 (Daniel Conway)B-Spec race best at Runoffs 2026: 2:51.633 (Josh Schmidt)B-Spec qualifying best at Runoffs 2015: 2:29.366 (John Heinricy)B-Spec qualifying best at Runoffs 2016: 1:46.865 (David Daughtery)B-Spec qualifying best at Runoffs 2017: 2:03.166 (David Daughtery)B-Spec qualifying best at Runoffs 2018: 1:59.321 (Oscar Jackson)B-Spec qualifying best at Runoffs 2019: 2:22.368 (Frank Schwartz)B-Spec qualifying best at Runoffs 2020: 2:52.033 (David Daughtery)B-Spec qualifying best at Runoffs 2021: 2:03.121 (John Phillips)B-Spec qualifying best at Runoffs 2022: 2:22.945 (Steve Introne)B-Spec qualifying best at Runoffs 2023: 2:22.707 (Riley Salyer)B-Spec qualifying best at Runoffs 2024: 2:52.027 (Daniel Conway)B-Spec qualifying best at Runoffs 2025: 2:52.211 (Josh Schmidt)B-Spec qualifying best at Runoffs 2026: 2:51.987 (Josh Schmidt)SM race best at Runoffs 2015: 2:24.067 (Todd Lamb)SM race best at Runoffs 2016: 1:40.764 (Michael Carter)SM race best at Runoffs 2017: 1:59.100 (Michael Gagliardo)SM race best at Runoffs 2018: 1:55.278 (Michael Carter)SM race best at Runoffs 2019: 2:16.459 (Elivan Goulart)SM race best at Runoffs 2020: 2:43.748 (Preston Pardus)SM race best at Runoffs 2021: 1:58.837 (Brian Henderson)SM race best at Runoffs 2022: 2:19.107 (Travis Wiley)SM race best at Runoffs 2023: 2:16.229 (Julian DaCosta)SM race best at Runoffs 2024: 2:41.486 (Brett Kowalski)SM race best at Runoffs 2025: 2:44.430 (Kyle Greenhill)SM race best at Runoffs 2026: 2:42.725 (Francisco Barroso)SM qualifying best at Runoffs 2015: 2:18.661 (Andrew Carbonell)SM qualifying best at Runoffs 2016: 1:40.514 (Justin Hille)SM qualifying best at Runoffs 2017: 1:58.306 (Chris Haldeman)SM qualifying best at Runoffs 2018: 1:54.355 (Ken Sutherland)SM qualifying best at Runoffs 2019: 2:14.552 (Todd Buras)SM qualifying best at Runoffs 2020: 2:42.209 (Kyle Greenhill)SM qualifying best at Runoffs 2021: 1:57.695 (Brian Henderson)SM qualifying best at Runoffs 2022: 2:14.664 (Danny Steyn)SM qualifying best at Runoffs 2023: 2:14.986 (Danny Steyn)SM qualifying best at Runoffs 2024: 2:41.106 (Ethan Goulart)SM qualifying best at Runoffs 2025: 2:43.111 (Bobby Gossett)SM qualifying best at Runoffs 2026: 2:42.173 (Brett Kowalski)T3 race best at Runoffs 2015: 2:08.363 (Tom Wickersham)T3 race best at Runoffs 2016: 1:37.371 (Robert Schader)T3 race best at Runoffs 2017: 1:53.286 (Charles Hurley)T3 race best at Runoffs 2018: 1:49.610 (Mark Drennan)T3 race best at Runoffs 2019: 2:05.354 (Broderick Bauguess)T3 race best at Runoffs 2020: 2:31.688 (Marshall Mast)T3 race best at Runoffs 2021: 1:52.701 (Breton Williams)T3 race best at Runoffs 2022: 2:27.626 (Marshall Mast)T3 race best at Runoffs 2023: 2:05.854 (Chris Hart)T3 race best at Runoffs 2024: 2:29.191 (Marshall Mast)T3 race best at Runoffs 2025: 2:29.898 (Marshall Mast)T3 race best at Runoffs 2026: 2:27.540 (Scotty B White)T3 qualifying best at Runoffs 2015: 2:08.573 (Scotty B White)T3 qualifying best at Runoffs 2016: 1:36.741 (Charles Hurley)T3 qualifying best at Runoffs 2017: 1:52.214 (Rob Hines)Off the chart: T3 qualifying best at Runoffs 2018: 1:10.656 (Mark Drennan)T3 qualifying best at Runoffs 2019: 2:04.918 (Marshall Mast)T3 qualifying best at Runoffs 2020: 2:29.757 (Marshall Mast)T3 qualifying best at Runoffs 2021: 1:51.591 (Marshall Mast)T3 qualifying best at Runoffs 2022: 2:04.223 (Jason Ott)T3 qualifying best at Runoffs 2023: 2:04.520 (Steve Ott)T3 qualifying best at Runoffs 2024: 2:25.450 (Scotty B White)T3 qualifying best at Runoffs 2025: 2:28.676 (Nic Hammann)T3 qualifying best at Runoffs 2026: 2:27.890 (Nic Hammann)F5 race best at Runoffs 2015: 2:03.298 (Matthew Strand)F5 race best at Runoffs 2016: 1:29.853 (Steven Thompson)F5 race best at Runoffs 2017: 1:42.860 (Wiley Clinton McMahan)F5 race best at Runoffs 2018: 1:42.491 (David Lapham)F5 race best at Runoffs 2019: 1:57.572 (Wiley Mcmahan)F5 race best at Runoffs 2020: 2:21.391 (James Weida)F5 race best at Runoffs 2021: 1:43.140 (Sven de Vries)F5 race best at Runoffs 2022: 2:21.862 (Sven de Vries)F5 qualifying best at Runoffs 2015: 2:01.824 (W. Clint McMahan)F5 qualifying best at Runoffs 2016: 1:28.528 (Calvin Stewart)F5 qualifying best at Runoffs 2017: 1:43.136 (Wiley Clinton McMahan)F5 qualifying best at Runoffs 2018: 1:41.807 (Jeff Jorgenson)F5 qualifying best at Runoffs 2019: 1:57.361 (Wiley Mcmahan)F5 qualifying best at Runoffs 2020: 2:20.954 (Calvin Stewart)F5 qualifying best at Runoffs 2021: 1:42.619 (Ryan Mayfield)F5 qualifying best at Runoffs 2022: 1:57.689 (James Weida)Daytona International Speedway · Runoffs 2015R2015Mid-Ohio Sports Car Course · Runoffs 2016R2016Indianapolis Motor Speedway · Runoffs 2017R2017Sonoma Raceway · Runoffs 2018R2018Virginia International Raceway · Runoffs 2019R2019Road America · Runoffs 2020R2020Indianapolis Motor Speedway · Runoffs 2021R2021Virginia International Raceway · Runoffs 2022R2022Virginia International Raceway · Runoffs 2023R2023Road America · Runoffs 2024R2024Road America · Runoffs 2025R2025Road America · Runoffs 2026R2026
B-SpecSMT3F5solid race · dashed qualifying · slower is lower
80%85%90%95%100%42 rule changes between Runoffs 2018 and Runoffs 201942 ▾51 rule changes between Runoffs 2019 and Runoffs 202051 ▾45 rule changes between Runoffs 2020 and Runoffs 202145 ▾48 rule changes between Runoffs 2021 and Runoffs 202248 ▾50 rule changes between Runoffs 2022 and Runoffs 202350 ▾75 rule changes between Runoffs 2023 and Runoffs 202475 ▾51 rule changes between Runoffs 2024 and Runoffs 202551 ▾50 rule changes between Runoffs 2025 and Runoffs 202650 ▾B-Spec race best at Runoffs 2015: 100.0% of B-Spec's (John Heinricy)B-Spec race best at Runoffs 2016: 100.0% of B-Spec's (John Heinricy)B-Spec race best at Runoffs 2017: 100.0% of B-Spec's (David Daughtery)B-Spec race best at Runoffs 2018: 100.0% of B-Spec's (Jake Pipal)B-Spec race best at Runoffs 2019: 100.0% of B-Spec's (David Daughtery)B-Spec race best at Runoffs 2020: 100.0% of B-Spec's (Riley Salyer)B-Spec race best at Runoffs 2021: 100.0% of B-Spec's (Steve Introne)B-Spec race best at Runoffs 2022: 100.0% of B-Spec's (Riley Salyer)B-Spec race best at Runoffs 2023: 100.0% of B-Spec's (Richard Hromin)B-Spec race best at Runoffs 2024: 100.0% of B-Spec's (Rob Piekarczyk)B-Spec race best at Runoffs 2025: 100.0% of B-Spec's (Daniel Conway)B-Spec race best at Runoffs 2026: 100.0% of B-Spec's (Josh Schmidt)B-Spec qualifying best at Runoffs 2015: 100.0% of B-Spec's (John Heinricy)B-Spec qualifying best at Runoffs 2016: 100.0% of B-Spec's (David Daughtery)B-Spec qualifying best at Runoffs 2017: 100.0% of B-Spec's (David Daughtery)B-Spec qualifying best at Runoffs 2018: 100.0% of B-Spec's (Oscar Jackson)B-Spec qualifying best at Runoffs 2019: 100.0% of B-Spec's (Frank Schwartz)B-Spec qualifying best at Runoffs 2020: 100.0% of B-Spec's (David Daughtery)B-Spec qualifying best at Runoffs 2021: 100.0% of B-Spec's (John Phillips)B-Spec qualifying best at Runoffs 2022: 100.0% of B-Spec's (Steve Introne)B-Spec qualifying best at Runoffs 2023: 100.0% of B-Spec's (Riley Salyer)B-Spec qualifying best at Runoffs 2024: 100.0% of B-Spec's (Daniel Conway)B-Spec qualifying best at Runoffs 2025: 100.0% of B-Spec's (Josh Schmidt)B-Spec qualifying best at Runoffs 2026: 100.0% of B-Spec's (Josh Schmidt)SM race best at Runoffs 2015: 96.4% of B-Spec's (Todd Lamb)SM race best at Runoffs 2016: 94.2% of B-Spec's (Michael Carter)SM race best at Runoffs 2017: 96.0% of B-Spec's (Michael Gagliardo)SM race best at Runoffs 2018: 96.2% of B-Spec's (Michael Carter)SM race best at Runoffs 2019: 96.0% of B-Spec's (Elivan Goulart)SM race best at Runoffs 2020: 94.7% of B-Spec's (Preston Pardus)SM race best at Runoffs 2021: 95.9% of B-Spec's (Brian Henderson)SM race best at Runoffs 2022: 96.7% of B-Spec's (Travis Wiley)SM race best at Runoffs 2023: 94.8% of B-Spec's (Julian DaCosta)SM race best at Runoffs 2024: 93.9% of B-Spec's (Brett Kowalski)SM race best at Runoffs 2025: 94.7% of B-Spec's (Kyle Greenhill)SM race best at Runoffs 2026: 94.8% of B-Spec's (Francisco Barroso)SM qualifying best at Runoffs 2015: 92.8% of B-Spec's (Andrew Carbonell)SM qualifying best at Runoffs 2016: 94.1% of B-Spec's (Justin Hille)SM qualifying best at Runoffs 2017: 96.1% of B-Spec's (Chris Haldeman)SM qualifying best at Runoffs 2018: 95.8% of B-Spec's (Ken Sutherland)SM qualifying best at Runoffs 2019: 94.5% of B-Spec's (Todd Buras)SM qualifying best at Runoffs 2020: 94.3% of B-Spec's (Kyle Greenhill)SM qualifying best at Runoffs 2021: 95.6% of B-Spec's (Brian Henderson)SM qualifying best at Runoffs 2022: 94.2% of B-Spec's (Danny Steyn)SM qualifying best at Runoffs 2023: 94.6% of B-Spec's (Danny Steyn)SM qualifying best at Runoffs 2024: 93.7% of B-Spec's (Ethan Goulart)SM qualifying best at Runoffs 2025: 94.7% of B-Spec's (Bobby Gossett)SM qualifying best at Runoffs 2026: 94.3% of B-Spec's (Brett Kowalski)T3 race best at Runoffs 2015: 85.9% of B-Spec's (Tom Wickersham)T3 race best at Runoffs 2016: 91.1% of B-Spec's (Robert Schader)T3 race best at Runoffs 2017: 91.3% of B-Spec's (Charles Hurley)T3 race best at Runoffs 2018: 91.5% of B-Spec's (Mark Drennan)T3 race best at Runoffs 2019: 88.2% of B-Spec's (Broderick Bauguess)T3 race best at Runoffs 2020: 87.8% of B-Spec's (Marshall Mast)T3 race best at Runoffs 2021: 90.9% of B-Spec's (Breton Williams)Off the chart: T3 race best at Runoffs 2022: 102.6% of B-Spec's (Marshall Mast)T3 race best at Runoffs 2023: 87.6% of B-Spec's (Chris Hart)T3 race best at Runoffs 2024: 86.8% of B-Spec's (Marshall Mast)T3 race best at Runoffs 2025: 86.3% of B-Spec's (Marshall Mast)T3 race best at Runoffs 2026: 86.0% of B-Spec's (Scotty B White)T3 qualifying best at Runoffs 2015: 86.1% of B-Spec's (Scotty B White)T3 qualifying best at Runoffs 2016: 90.5% of B-Spec's (Charles Hurley)T3 qualifying best at Runoffs 2017: 91.1% of B-Spec's (Rob Hines)Off the chart: T3 qualifying best at Runoffs 2018: 59.2% of B-Spec's (Mark Drennan)T3 qualifying best at Runoffs 2019: 87.7% of B-Spec's (Marshall Mast)T3 qualifying best at Runoffs 2020: 87.1% of B-Spec's (Marshall Mast)T3 qualifying best at Runoffs 2021: 90.6% of B-Spec's (Marshall Mast)T3 qualifying best at Runoffs 2022: 86.9% of B-Spec's (Jason Ott)T3 qualifying best at Runoffs 2023: 87.3% of B-Spec's (Steve Ott)T3 qualifying best at Runoffs 2024: 84.6% of B-Spec's (Scotty B White)T3 qualifying best at Runoffs 2025: 86.3% of B-Spec's (Nic Hammann)T3 qualifying best at Runoffs 2026: 86.0% of B-Spec's (Nic Hammann)F5 race best at Runoffs 2015: 82.5% of B-Spec's (Matthew Strand)F5 race best at Runoffs 2016: 84.0% of B-Spec's (Steven Thompson)F5 race best at Runoffs 2017: 82.9% of B-Spec's (Wiley Clinton McMahan)F5 race best at Runoffs 2018: 85.5% of B-Spec's (David Lapham)F5 race best at Runoffs 2019: 82.7% of B-Spec's (Wiley Mcmahan)F5 race best at Runoffs 2020: 81.8% of B-Spec's (James Weida)F5 race best at Runoffs 2021: 83.2% of B-Spec's (Sven de Vries)F5 race best at Runoffs 2022: 98.6% of B-Spec's (Sven de Vries)F5 qualifying best at Runoffs 2015: 81.6% of B-Spec's (W. Clint McMahan)F5 qualifying best at Runoffs 2016: 82.8% of B-Spec's (Calvin Stewart)F5 qualifying best at Runoffs 2017: 83.7% of B-Spec's (Wiley Clinton McMahan)F5 qualifying best at Runoffs 2018: 85.3% of B-Spec's (Jeff Jorgenson)F5 qualifying best at Runoffs 2019: 82.4% of B-Spec's (Wiley Mcmahan)F5 qualifying best at Runoffs 2020: 81.9% of B-Spec's (Calvin Stewart)F5 qualifying best at Runoffs 2021: 83.3% of B-Spec's (Ryan Mayfield)F5 qualifying best at Runoffs 2022: 82.3% of B-Spec's (James Weida)Daytona International Speedway · Runoffs 2015R2015Mid-Ohio Sports Car Course · Runoffs 2016R2016Indianapolis Motor Speedway · Runoffs 2017R2017Sonoma Raceway · Runoffs 2018R2018Virginia International Raceway · Runoffs 2019R2019Road America · Runoffs 2020R2020Indianapolis Motor Speedway · Runoffs 2021R2021Virginia International Raceway · Runoffs 2022R2022Virginia International Raceway · Runoffs 2023R2023Road America · Runoffs 2024R2024Road America · Runoffs 2025R2025Road America · Runoffs 2026R2026
B-SpecSMT3F5solid race · dashed qualifying · each class's best lap as a share of B-Spec's at the same event (the reference class, changeable above); 100% is level, less is quicker, so up the chart is quicker
EventB-SpecSMT3F5
Qual best Race best Trap Qual best Race best Trap vs B-Spec % of B-Spec Qual best Race best Trap vs B-Spec % of B-Spec Qual best Race best Trap vs B-Spec % of B-Spec 
Road America Runoffs 20262026-09-282:51.987Josh Schmidt · fastest of 23 · top 5 within 1.3s-0.224s (-0.13%)2:51.633Josh Schmidt · fastest of 22 · top 5 within 1.7s-1.980s (-1.14%)112.5Ricky Holmstrom-0.2 mph (-0.1%)2:42.173Brett Kowalski · fastest of 34 · top 5 within 0.3s-0.938s (-0.58%)2:42.725Francisco Barroso · fastest of 35 · top 5 within 0.2s-1.705s (-1.04%)119.6Wyatt Couch+0.3 mph (+0.3%)-8.908squal -9.814s94.8%qual 94.3%2:27.890Nic Hammann · fastest of 12 · top 5 within 4.0s-0.786s (-0.53%)2:27.540Scotty B White · fastest of 12 · top 5 within 4.8s-2.358s (-1.57%)138.4Nic Hammann+0.2 mph (+0.2%)-24.093squal -24.097s86.0%qual 86.0%
50 rule changes (B-Spec: 16, SM: 2, T3: 32)13 weight · 11 suspension & brakes · 7 tyres & wheels · 3 induction · 2 cars added · 1 aero · 1 engine · 1 removed · 1 wording · 10 othershowhide
  • T3 T3 Subaru STI 2015-2021 #40708weight
  • T3 Porsche 986 Boxster S (00-04) Spec Line Additions for Suspension #40307suspension & brakes
  • T3 Allow a Change in Rear Axle #40507other
  • SM Rear Toe Link #40271other
  • T3 Ford FR500S #40031cars added
  • T3 Audi S4 T3 #40241suspension & brakes
  • T3 VW DSG Missing in 2015-2018 VW Golf R Spec Line #40304weight
  • B-Spec ECU Location in Mazda2 #40034engine
  • B-Spec Allow Cars With Combined Brake/Clutch Reservoir to Separate. #40122suspension & brakes
  • T3 2015+ Mustang Ecoboost Performance #40036suspension & brakes
  • T3 Review Spec Lines for Camaro V-6 #40149removed -150 lbs
  • T3 Power of GR86/BRZ in T3 #40169weight -225 lbs
  • T3 Allow T3 Ford Mustang 4.6 to Use the Coyote MT-82 6 speed. #40190other
  • T3 Porsche 986S Boxster S (2000-2004) Minimum Weight #40196weight
  • B-Spec Race Memo RM 26-01 B-Spec Mini Cooper Weight Adjustments with OEM #40070weight
  • T3 2019 Mustang 2.3L Ecoboost Request #39935weight -50 lbs
  • T3 2013 Audi S4 #39983induction
  • T3 Request Update to T3 Camaro V6 (10-15) Spec Line #40007tyres & wheels
  • T3 S550 Mustang 3.7 #40010aero
  • SM Part Number Change Request #39914wording
  • T3 350Z #39843induction
  • B-Spec Add Getrag GS5BG Transmisson Ratios for Mini R50 #39416suspension & brakes
  • B-Spec Exhaust Rules Update #39669other
  • B-Spec Please reinstate KW suspension for R56 #39727other
  • B-Spec Add approved replacement catalysts #39817other
  • B-Spec Yaris/Versa catalyst removal #39818other
  • T3 Nissan 370Z Tire Size #39701tyres & wheels
  • T3 986 Boxster S Wheel Width #39819tyres & wheels
  • T3 Request Update to T3 Camaro V6 (10-15) Spec Line #39839tyres & wheels
  • T3 Audi S4 #39870cars added
  • B-Spec C-Spec Rear Sway Bars #39652suspension & brakes
  • T3 Please change 2011-2014 Mustang V6 Spec Line to 2005-2014 #39558other
  • T3 Nissan 350Z Weight Request #39598weight -25 lbs
  • T3 Allow Alt Bushing Material in Toe Links #39607suspension & brakes
  • B-Spec Notes section cleanup #39062weight
  • B-Spec 2026 BOP Recommendations #39475weight +25 lbs
  • B-Spec Expire NLA Mazda 2 Headers #39582weight
  • T3 Request to Allow Spec Mustang to Touring 3 in Appendix M Trim #39196weight -50 lbs
  • T3 Tire Help for Spec E9X in T3 #39222tyres & wheels
  • T3 SpecE46 Tire Sizing #39292tyres & wheels
  • T3 Alternate Placement of Fuse Panel and Electronics Request #39370other
  • T3 Clarify T4 Brake Rotor Allowance #39503suspension & brakes
  • T3 T3 Ecoboost Mustang clarification #39236suspension & brakes
  • B-Spec Alternate Shift Cable Bushings and Rear Spring Seats #38472suspension & brakes
  • B-Spec Fiesta BOP Adjustment #38847weight +55 lbs
  • B-Spec Request to Remove Rear Shock From Spec Line Hyundai Accents/Kia #39017suspension & brakes
  • B-Spec Update Honda Fit MT (07-08) Runoffs Eligibility #39060induction
  • T3 Make the S2000 Competitive Again #38470tyres & wheels
  • T3 ND Gearset Request for T4 #39166other
  • T3 ND Spec Lines Wrong PT#'s #39170weight
Road America Runoffs 20252025-09-292:52.211Josh Schmidt · fastest of 19 · top 5 within 0.8s+0.184s (+0.11%)2:53.613Daniel Conway · fastest of 18 · top 5 within 0.4s+1.724s (+1.00%)112.7Stewart Black-0.4 mph (-0.3%)2:43.111Bobby Gossett · fastest of 32 · top 5 within 0.3s+2.005s (+1.24%)2:44.430Kyle Greenhill · fastest of 28 · top 5 within 0.3s+2.944s (+1.82%)119.3Francisco Barroso-0.6 mph (-0.5%)-9.183squal -9.100s94.7%qual 94.7%2:28.676Nic Hammann · fastest of 19 · top 5 within 1.8s+3.226s (+2.22%)2:29.898Marshall Mast · fastest of 19 · top 5 within 2.9s+0.707s (+0.47%)138.2Marshall Mast-13.0 mph (-8.6%)-23.715squal -23.535s86.3%qual 86.3%
51 rule changes (B-Spec: 23, SM: 4, T3: 24)9 induction · 7 cars added · 7 suspension & brakes · 6 weight · 3 engine · 3 tyres & wheels · 5 wording · 11 othershowhide
  • B-Spec Remove Asterisk from Rule 9 #38768other
  • B-Spec Disabling 2 Pedal Shutdown #38354engine
  • B-Spec Update Honda Fit MT (07-08) Intake Allowance #38530induction
  • T3 Incorrect Touring Heading #38451wording
  • T3 correct letter 37421 #38204wording
  • B-Spec Add Sedan spec lines for Hyundai & Kia #37537cars added
  • B-Spec Shifter Bushing Questions. #38048suspension & brakes
  • B-Spec Add Weapon R Intake to Honda Fit MT (09-14) Spec Line #38306induction
  • B-Spec Update Rule 46 #38307suspension & brakes
  • SM SMX Data Submission - Penalties #38248other
  • SM SMX Penaly Clarification updated language #38337wording
  • B-Spec Correct Hyundai/Kia Model Years #37943wording
  • B-Spec 07-08 Honda Fit MT Requests #37974weight +50 lbs
  • B-Spec Add B14 Kit Part # to Honda Fit (07-08) Spec line #38010other
  • SM Clarify Tire Marking Regs #38005tyres & wheels
  • T3 S550 Mustang #38061weight -50 lbs
  • T3 correct letter 37421 #38204wording
  • B-Spec 2025 BOP Recommendations #37520weight
  • B-Spec Hyundai/Toyota Factory Rear Disc Models #37534weight
  • B-Spec Request to Update the Spec line for Hyundai Accent and Kia Rio #37880suspension & brakes
  • T3 SpecE46 Tire Change #37421tyres & wheels
  • T3 S197 Mustang V6 in T3 #37594weight -25 lbs
  • B-Spec Toyota Yaris Hatchback (12-18) rear disc brakes #37530suspension & brakes
  • B-Spec Yaris Speed Sensor #37536other
  • B-Spec Set Expiration Date For Fiat 500 #37689other
  • B-Spec Remove Redundant Language from Notes Sections #37337induction
  • B-Spec Expire designated spec lines #37517other
  • B-Spec Set expiration date for Nissan Micra Cup Cars (Canadian) #37519other
  • T3 350z BOP #37427induction
  • T3 Request to Classify Club Spec in Appropriate Touring Classes #37523cars added
  • B-Spec Remove wheelbase from spec lines and replace with Restrictor #36074induction
  • B-Spec Bilstein Rear Shock Request for Hyundai Accent/Kia Rio #36965suspension & brakes
  • T3 Remove spec lines that have expired #37269induction
  • T3 Request to Move Spec Mustang to Touring 3 (from T2) #37080cars added
  • T3 3.7 Mustangs BoP #37186induction
  • SM E&O SMX Regs 9.1.7.1.D.5.u-.w #37070other
  • T3 Amend TIR Placement on VW #36175induction
  • T3 Redundant Verbiage Regarding Mustang Spec Lines for Driveshaft #36484suspension & brakes
  • T3 Fuel Emissions Components #37076engine
  • T3 fix brake wording #37129suspension & brakes
  • T3 Evaporative emissions systems #37130engine
  • T3 Allow Spec MX5 upgrade kit for 2009-11 RX8 S2 Transmision #37140other
  • T3 Move Spec Boxster to T4 #37158cars added
  • T3 BMW 320i Spec Line #37204other
  • T3 Classification for a 2005 Cadillac CTS 3.6 liter 6 speed manual #37224cars added
  • T3 Request to Classify BMWs #37226cars added
  • T3 Make adjustments to the 2015 STI Spec line #37246tyres & wheels
  • T3 class a civic #37294cars added
  • T3 Older STI in T3 #37300weight -100 lbs
  • B-Spec Scion IA/Toyota Yaris/Mazda 2 DY chassis suspension #35780other
  • B-Spec Clean up 07-08 Honda Fit AT Notes Section #36542induction
Road America Runoffs 20242024-10-012:52.027Daniel Conway · fastest of 25 · top 5 within 0.7s-0.006s (-0.00%)2:51.889Rob Piekarczyk · fastest of 25 · top 5 within 0.6s-0.958s (-0.55%)113.1Joe McClughan+1.5 mph (+1.4%)2:41.106Ethan Goulart · fastest of 49 · top 5 within 0.5s-1.103s (-0.68%)2:41.486Brett Kowalski · fastest of 43 · top 5 within 0.3s-2.262s (-1.38%)119.9Alex Bertagnoli-1.4 mph (-1.2%)-10.403squal -10.921s93.9%qual 93.7%2:25.450Scotty B White · fastest of 22 · top 5 within 4.5s-4.307s (-2.88%)2:29.191Marshall Mast · fastest of 21 · top 5 within 1.8s-2.497s (-1.65%)151.2Scotty B White+13.1 mph (+9.5%)-22.698squal -26.577s86.8%qual 84.6%
75 rule changes (B-Spec: 30, SM: 4, T3: 41)12 induction · 12 weight · 11 suspension & brakes · 7 tyres & wheels · 6 cars added · 5 engine · 2 removed · 2 wording · 18 othershowhide
  • SM SMX Camera Rule Correction #36496wording
  • SM AIM ECU Protocol #36556engine
  • SM OE versus OEM Definitons #36608other
  • SM Shifter Bushing #36611suspension & brakes
  • B-Spec Update Tire Rules #35984tyres & wheels
  • B-Spec BOP help for the automatic B-Specs #36161weight -50 lbs
  • B-Spec Require hood pins #36233other
  • B-Spec Sonic Caliper Pistons #36238suspension & brakes
  • T3 Honda Civic Si (2017+) #36249weight
  • T3 Subaru Reliability Help #36284other
  • T3 spec line for 36073 #36338cars added
  • T3 36131 #36339cars added
  • B-Spec Clean up (15-19) Honda Fit MT & CVT Notes Sections #36068induction
  • B-Spec Set expiration date for Nissan Versa (09-11) #36069other
  • B-Spec Delete Redundant Rule 25 #36075removed
  • B-Spec Correct error for rear brakes of Hyundai/Kia #36174suspension & brakes
  • T3 Mustang T2/T3 #35877other
  • T3 T2-T4 Driveshaft Mistake...? #36050weight
  • T3 E&O: #35174 (Derek Chan) 350Z Parity Request #36116induction
  • T3 B8/8.5 Audi S4 T3 and T2 #36195cars added
  • T3 Z4 Roadster Eligibility #36196other
  • B-Spec Add B14 Kit Part # to Sonic Spec line In #35969induction
  • B-Spec Eliminate redundant sway bar end link part #s from notes In #35970suspension & brakes
  • B-Spec Update Fiat 500 Spec line In #35990other
  • B-Spec Update (15-19) Honda Fit #36067weight +25 lbs
  • T3 Global MX5 Tre change #36046tyres & wheels
  • B-Spec Delete trim levels/update language for spec lines #35746other
  • B-Spec Wheel Rules #36066tyres & wheels
  • T3 Allow T4 and T3 RX8 to Disable/Remove Factory Oil Inj. #35761engine
  • T3 Driveshafts #35916weight
  • T3 Audi S4 HST requirement #35918other
  • B-Spec Change restrictor from 30mm to 31mm (2015+ Honda Fit) and add 50# #34857induction
  • B-Spec Wheel Offset and Spacer Revision #35466tyres & wheels
  • B-Spec Set Expiration Date for Unused Spec Lines #35742engine
  • B-Spec BOP Adjustment for Yaris iA, 2020+ Versa, and 07-08 Honda Fit #35382weight -125 lbs
  • B-Spec 07-08 Honda Fit Rear Sway Bar part # #35473suspension & brakes
  • T3 Spec Z Interchange in T3 #34416induction
  • T3 please classify 2000-2002 Audi s4 #35306cars added
  • T3 Reorganize Spec Lines #35375induction
  • T3 370Z Brake Rotor Size Correction #35487suspension & brakes
  • T3 T3 V6 Mustang help #35526induction
  • T3 Nissan 370Z - Brake System Allowance - Brake Booster #35556suspension & brakes
  • T3 Mustang Help #35559induction
  • T3 Appeal for Retention of T3 Mazda RX-8 Spec Line (Letter #35378) #35577other
  • T3 Request to Keep the Mazda Rx-8 in Touring 3 #35584other
  • T3 Subaru WRX (02-05) Appeal #35656other
  • B-Spec Eliminate Redundant Trans Cooler Rule #35353wording
  • B-Spec Fix Sonic Hatchback MT Spec Line #35371other
  • B-Spec Split Spec Line of Automatic and Manual 2nd Gen (09-14) Fit #35251cars added
  • B-Spec Equalize Mazda 2 Headers and clean up spec line #35259weight
  • B-Spec Rear Sway Bar Request for Nissan Versa and Versa Note 2013- #35323suspension & brakes
  • T3 15-18 Golf R Alignment with Existing GTI and R Speclines #35235tyres & wheels
  • T3 More Car Lightening Stuff #35319weight
  • T3 Open Strut Tower Brace Options for Ford Mustang V6 (11-14) #35322suspension & brakes
  • T3 Mustang ecoboost #35351induction
  • T3 Inclusion of B-C spec cars in T4 #35374other
  • T3 T2-T4 Set expiration dates on spec lines #35378induction
  • B-Spec B-Spec Hankook Tire for Regionals #35055tyres & wheels
  • B-Spec Update 12-19 Nissan Versa Spec Line & Adjust BOP #35074removed -60 lbs
  • B-Spec Clarifying the ECU and Data Acquisition language #35236engine
  • T3 T3 Solstice Brakes #35106suspension & brakes
  • T3 350Z Parity Request #35174weight
  • T3 Requested Update of Model Years of 370Z #35231other
  • T3 Update Request for 2010 Mustang GT 4.6 #35234other
  • T3 SE46 Continued Parity/ Cold Air Intake request #35267induction -50 lbs
  • T3 Please help the Subaru STIs. #35278weight +100 lbs
  • B-Spec Mazda 3i 2010-2013 5-Speed Manual Gear Ratios #34820other
  • B-Spec Error Correction #34955engine
  • T3 Porsche Cayman Transmissions and Ratios #34891weight
  • T3 2006-10 Volkswagen GTI - Weight Reduction request and KO4 Turbo #34414weight
  • T3 Adding Model Years to T3 Golf R Spec Line #34612other
  • T3 Rear Camber Arms for T3 VW Golf R #34613suspension & brakes
  • T3 Classing Spec E90 Cars in SCCA #34791cars added
  • T3 TIR location requirement in VW Golf Spec lines #35048induction
  • B-Spec B-Spec Tire #35034tyres & wheels
Virginia International Raceway Runoffs 20232023-09-232:22.707Riley Salyer · fastest of 25 · top 5 within 1.0s-0.238s (-0.17%)2:23.732Richard Hromin · fastest of 23 · top 5 within 0.4s-0.087s (-0.06%)110.7Chris Daughtery-1.6 mph (-1.4%)2:14.986Danny Steyn · fastest of 52 · top 5 within 0.1s+0.322s (+0.24%)2:16.229Julian DaCosta · fastest of 46 · top 5 within 0.3s-2.878s (-2.07%)120.3Jim Drago+1.1 mph (+0.9%)-7.503squal -7.721s94.8%qual 94.6%2:04.520Steve Ott · fastest of 18 · top 5 within 1.9s+0.297s (+0.24%)2:05.854Chris Hart · fastest of 18 · top 5 within 1.8s-21.772s (-14.75%)139.1Jason Ott-1.1 mph (-0.8%)-17.878squal -18.187s87.6%qual 87.3%
50 rule changes (B-Spec: 21, SM: 1, T3: 28)17 weight · 6 tyres & wheels · 5 cars added · 5 suspension & brakes · 4 induction · 1 engine · 1 removed · 1 wording · 10 othershowhide
  • B-Spec Initial car classifications and spec lines #34461weight
  • T3 2012-2013 Golf R - added to T3 #34413cars added
  • T3 Rules Clarification for Mazda RX8 Spec Line #34395weight
  • T3 rule book corrections #34437wording
  • T3 Allowing 255 Tire Width for Nissan 350z #34471tyres & wheels
  • T3 Ride Height Correction for the T3 Solstice. #34615suspension & brakes
  • B-Spec Hyundai Accent Restrictor Plate #34331induction
  • B-Spec Hyundai Accent 2012 Model #34332other
  • T3 2016+ Camaro 1LE - Max Wheel Diameter #34003tyres & wheels
  • T3 2022 Toyota GR Cup for T3 #34448removed
  • B-Spec T5 Tire Options #33641tyres & wheels
  • B-Spec Allow ZZP Sonic Aluminum Radiator 1.68 #33660induction
  • B-Spec Fasteners for Bumper Caps #33797other
  • B-Spec Allow CAN Bus Connection to Data Systems #33806engine
  • B-Spec Request Ford Fiesta weight reduction 25lbs #33890weight -25 lbs
  • B-Spec BoB Adjustments #34208weight -25 lbs
  • B-Spec T5 Mazda 3 Spec Line Addition #33536cars added
  • B-Spec T5 Ride Height Rules. #33552suspension & brakes
  • B-Spec T5 Spring Allowance #33557suspension & brakes
  • B-Spec T5 Wheel Minimum Weight #33558weight
  • B-Spec Threaded Metal Inserts for Plastic Intake Manifolds #34164induction
  • T3 S550 Reconcile With S197 #34093weight -75 lbs
  • T3 SE46 Parity Help #34178weight -50 lbs
  • T3 2022 Toyota GR Cup for T3 discussion #34234cars added
  • B-Spec T5 Rules Feedback #33595weight
  • T3 Request Spec E46 in T3 Weight Adjustment #33897weight -25 lbs
  • T3 E36 2.5L 323is Weight Reduction #33975weight
  • T3 Update SpecE46 Spec Line to Current SpecE46 Ruleset #34016other
  • T3 Request to all ECS Tuning inner-cooler to 06-10 VW GTI spec #33769other
  • B-Spec Early Model Mini #33363other
  • B-Spec Helper Versus Tender springs. #33866suspension & brakes
  • T3 T3 Boxster S GCR request #33687tyres & wheels
  • T3 OEM VW Steering Spindle Replacements 06-10 VW GTI and Jetta #33732other
  • T3 BMW 320I intercooler #33762other
  • B-Spec Split up Spec lines for Automatic/Manual 2nd Gen Fit #33292other
  • T3 Request to classify 2014 Base Cayman #33159cars added
  • T3 Mustang OEM Grill Request #33333other
  • T3 Hyundai Classification #33498cars added
  • T3 Adjustable Rear Camber Arms for VW (All Generations) #33572suspension & brakes
  • B-Spec Request to Split Spec Lines for Automatic Models #33270weight
  • B-Spec Tire Rule Request #33350tyres & wheels
  • SM BOP for NB1 and NB2 #32309weight
  • T3 350z SPC Upper Control Arm Safety Concerns #33020weight
  • T3 Request Help for 350z #33379weight -100 lbs
  • T3 Ecoboost Acknowledgement #33506induction
  • T3 Touring (T2-T5) Category #33617tyres & wheels
  • T3 ENO 9.1.9.2.D.1.e.1.a. #33651other
  • T3 Solstice GXP in T3 #33501weight
  • B-Spec Utilize the Data - Make BoP Changes #32179weight -225 lbs
  • T3 Another 2022 BRZ/86 T3 request #32945weight +225 lbs
Virginia International Raceway Runoffs 20222022-09-242:22.945Steve Introne · fastest of 30 · top 5 within 1.3s+0.577s (+0.41%)2:23.819Riley Salyer · fastest of 30 · top 5 within 0.8s+1.725s (+1.21%)112.3Matt Giuffre+0.1 mph (+0.1%)2:14.664Danny Steyn · fastest of 60 · top 5 within 0.2s+0.112s (+0.08%)2:19.107Travis Wiley · fastest of 58 · top 5 within 0.9s+2.648s (+1.94%)119.2Jonathan Neudorf-0.6 mph (-0.5%)-4.712squal -8.281s96.7%qual 94.2%2:04.223Jason Ott · fastest of 20 · top 5 within 2.1s-0.695s (-0.56%)2:27.626Marshall Mast · fastest of 19 · top 5 within 4.1s+22.272s (+17.77%)140.2Jason Ott+2.0 mph (+1.4%)+3.807squal -18.722s102.6%qual 86.9%1:57.689James Weida · fastest of 11 · top 5 within 3.9s+0.328s (+0.28%)2:21.862Sven de Vries · fastest of 10 · top 5 within 14.3s+24.290s (+20.66%)142.9Calvin Stewart+0.1 mph (+0.1%)-1.957squal -25.256s98.6%qual 82.3%
48 rule changes (B-Spec: 10, SM: 1, T3: 31, F5: 6)10 suspension & brakes · 10 weight · 8 cars added · 5 induction · 3 engine · 1 aero · 1 tyres & wheels · 4 wording · 6 othershowhide
  • F5 Intake Boots Correction #33028induction
  • T3 S2000 Hard Top Clarification #32779wording
  • T3 T3 Pontiac Solstice- #33081induction
  • B-Spec Request new Mazda Rear Swaybar #32769suspension & brakes
  • F5 Ensure availability of ECU for Rotax engines #32695engine
  • F5 Clarify stepped exhaust header references #32743engine
  • T3 Classify Car #32691cars added
  • T3 2022 BRZ Sway bar and lip spoiler. #32703aero
  • F5 593 carb boot availability and oil pump clarification #32527induction
  • B-Spec Request to Remove Part Numbers from Kia/Hyundai Spec Lines #32378induction
  • T3 correct wording #31750weight
  • T3 2005-2008 Porsche Boxster 2.7 #31999cars added
  • T3 Request Alternate Front & Rear Strut/Shock Top Hats #32452suspension & brakes
  • T3 2022 Subaru BRZ and Toyota 86 twins #32483weight
  • SM Update GCR Section 9.1.7.3.A.1. #32217suspension & brakes
  • T3 Request to Allow the Use of Aftermarket ECU's in Touring #31067engine
  • T3 T3 Mustang V8/V6 #31959weight -50 lbs
  • T3 Subaru STI (15-20) Missing part #32294other
  • B-Spec Request spring attachment #31351suspension & brakes
  • B-Spec Limit Rear Camber to 1.75 Degrees Section 9.1.10.E.35 #31393suspension & brakes
  • B-Spec Letter 31442 Part# Correction #32060wording
  • F5 E&O class name #32194other
  • T3 Touring 3 BOP adjustments for 2022 #31481weight +75 lbs
  • T3 BMW 330i Minimum Comp Weight #31606weight -60 lbs
  • T3 Adjust T3 370Z #31748weight +50 lbs
  • T3 TIR changes for FWD T3 models #31825induction
  • T3 Reply to letter #31486/29879 T2-T4 Grill openings #31935suspension & brakes
  • T3 BRZ vs BRZ TS #32022tyres & wheels
  • T3 Remove StopTech 4 piston BBK, allow any 4 Piston Kit - VW GTI #33082weight
  • B-Spec Request to Classify 2020-21 Versa S #30759cars added
  • B-Spec Request to Classify the Toyota IA sedan & Scion IA Sedan for 2022 #31045cars added
  • B-Spec Mazda 2 Undertray #31442suspension & brakes
  • B-Spec Request to add 2007-2008 Honda Fit #30853cars added
  • F5 Data Box Mounting Plate #31638other
  • T3 Request FRS/BRZ/86 T3 Weight Reduction #30818weight -75 lbs
  • T3 Request to Classify 2022 Toyota 86 / Subaru in T3 & T4 #30931cars added
  • T3 Reply to letter 29879 T2-T4 Grill Openings #31486suspension & brakes
  • T3 Please Adjust Years Allowed for BMW 335i to 07-10, not 08-13 #31530other
  • T3 Please Adjust Years Allowed for BMW 135i to 08-10, not 08-13 #31531other
  • T3 Request to clarify radiator hoses #31682wording
  • T3 T3 Nissan Z Suspension Update #31728other
  • T3 Clarify Permitted/Allowed #31743suspension & brakes
  • T3 Request to correct model years BMW Z4 M Coupe #31371wording
  • T3 Correct letter the 31327 #31563weight +150 lbs
  • T3 Request to Classify 2014 VW Jetta 1.8t TSI #30436cars added
  • T3 Request Weight Reduction 323is #30765weight -100 lbs
  • T3 Class Newer STI in T3 #31327cars added
  • B-Spec Rules Clarification of Body and Camber Plates #30814suspension & brakes
Indianapolis Motor Speedway Runoffs 20212021-09-252:03.121John Phillips · fastest of 60 · top 5 within 1.2s-0.045s (-0.04%)2:03.971Steve Introne · fastest of 60 · top 5 within 0.4s-0.079s (-0.06%)111.2David Oliveira1:57.695Brian Henderson · fastest of 90 · top 5 within 0.5s-0.611s (-0.52%)1:58.837Brian Henderson · fastest of 88 · top 5 within 0.3s-0.263s (-0.22%)119.8Kyle Greenhill-5.134squal -5.426s95.9%qual 95.6%1:51.591Marshall Mast · fastest of 23 · top 5 within 0.9s-0.623s (-0.56%)1:52.701Breton Williams · fastest of 22 · top 5 within 0.7s-0.585s (-0.52%)136.4Jason Ott-11.270squal -11.530s90.9%qual 90.6%1:42.619Ryan Mayfield · fastest of 22 · top 5 within 1.6s-0.517s (-0.50%)1:43.140Sven de Vries · fastest of 20 · top 5 within 1.7s+0.280s (+0.27%)144.4James Weida-20.831squal -20.502s83.2%qual 83.3%
45 rule changes (B-Spec: 22, SM: 1, T3: 19, F5: 3)7 suspension & brakes · 5 cars added · 5 induction · 5 tyres & wheels · 5 weight · 1 engine · 3 wording · 14 othershowhide
  • B-Spec Rules Clarification of Body and Camber Plates #30814suspension & brakes
  • F5 Clarify allowable assisted shifting systems #30871wording
  • F5 Request to correct terminology #30976tyres & wheels
  • B-Spec B-Spec Mazda2 Header Update #30884weight
  • T3 Follow-up to letter 29797-Porsche Spec Boxster in T3 Adjustment #30144weight -50 lbs
  • T3 Wheel Size #30677tyres & wheels
  • T3 Request weight adder to be applied to the Global Cup Miata ND2 #30730weight
  • B-Spec Transmission Cooler Requests #30079other
  • B-Spec Request to classify the 07 Honda Fit #30083cars added
  • B-Spec Request Ford Fiesta Eibach Rear Sway Bar Part Number 35143.320 #30340suspension & brakes
  • B-Spec Restrictor rule #30474induction
  • B-Spec Rear wipers on all cars #30585other
  • F5 Request to Allow Rotax 593 HO Engine #30712engine
  • T3 Civic Type R Brake Rotors #29817suspension & brakes
  • T3 Requesting Variance on Hardtop #30093other
  • T3 07-09 and 10-13 Mazdaspeed 3 Fuel Pump #30154other
  • B-Spec Allow 4 lug hub conversion to R60 and R61 MINI #29863suspension & brakes
  • B-Spec Mazda2 header replacement #29944weight +50 lbs
  • B-Spec Honda Fit Years on Spec Line #30078other
  • B-Spec Hyundai/Kia restrictor size incorrect #30380induction
  • B-Spec Clarify tire compound in rules #30387tyres & wheels
  • SM Updates - Obsolete Parts & BOP Parts #30438other
  • T3 Request consistency review in GCR #30263other
  • T3 Request to classify 2006-2008 Cayman #30315cars added
  • B-Spec Spec Tire Recommendation #29480tyres & wheels
  • B-Spec Make restrictor thickness unique for B Spec #30349induction
  • T3 2020 T3 Suggested Changes #30002weight -50 lbs
  • B-Spec Request to Classify Hyundai Accent (RB) 2012-2019 #29484cars added
  • B-Spec Countryman production years incorrect #29864other
  • B-Spec Toyota Yaris Model Year Corrections #29896wording
  • B-Spec Correction spec lines for ride height Mini Cooper all models #29952suspension & brakes
  • B-Spec Request to Allow Removal of Stock Brake Dust Shields #29981suspension & brakes
  • B-Spec Request to allow OBX header and restrictor to R55 Clubman 08-10 #30024induction
  • T3 2021 Toyota Supra #29567cars added
  • T3 Chevrolet Camaro LT-I4 Turbo 1LE (2019-) Model Year to 2016- #30090induction
  • T3 Fix T2 Mustang spec line #30106other
  • T3 Spec Boxster Tire Size #30159tyres & wheels
  • T3 Request to Classify BMW M2 CS #29523cars added
  • T3 Allow the SpecMX-5 Update Kit Into Touring 4 for the MX-5 #29681other
  • T3 350Z Rear Caliper Replacement #29710other
  • T3 Request Mustang 8.8” rear axle replacement #29860other
  • T3 Cap year range on all 86s #29908other
  • B-Spec Request clarification of B14 shock package for any and all cars #29483suspension & brakes
  • B-Spec Cleanup of spec lines #29495wording
  • T3 Alfa Romeo 4C Launch Edition #29531other
Road America Runoffs 20202020-10-022:52.033David Daughtery · fastest of 25 · top 5 within 1.9s2:52.847Riley Salyer · fastest of 25 · top 5 within 0.8s111.5Robert Iversen2:42.209Kyle Greenhill · fastest of 77 · top 5 within 0.5s2:43.748Preston Pardus · fastest of 75 · top 5 within 1.0s121.3Kyle Greenhill-9.099squal -9.824s94.7%qual 94.3%2:29.757Marshall Mast · fastest of 29 · top 5 within 2.1s2:31.688Marshall Mast · fastest of 20 · top 5 within 1.8s138.1Jason Ott-21.159squal -22.276s87.8%qual 87.1%2:20.954Calvin Stewart · fastest of 16 · top 5 within 1.8s2:21.391James Weida · fastest of 14 · top 5 within 1.5s143.2Aaron Ellis-31.456squal -31.079s81.8%qual 81.9%
51 rule changes (B-Spec: 17, SM: 2, T3: 26, F5: 6)9 cars added · 8 weight · 5 induction · 4 engine · 3 suspension & brakes · 3 tyres & wheels · 8 wording · 11 othershowhide
  • F5 Request to Update Suzuki Engine Years for F500 #29453engine
  • SM Radiator E&O Clarifications #29294engine
  • T3 Request to Classify Honda Civic Type R in T3 #27840cars added
  • B-Spec Allowance Versus Requirement for R56 Mini Cooper #29127induction
  • SM Modifications to prevent failures of Rear Brake Caliper Pin #28953suspension & brakes
  • T3 Request to classify 2009 Honda Accord v6 manual #28913cars added
  • F5 Request for Cockpit Adjustment of External Jetting Devices #28359other
  • F5 Two Stroke Motors (reply to #28359 WDYT) #28816engine
  • F5 Re letter requesting driver adjustable carb mixture #28840other
  • F5 #28359 WDYT Request for Cockpit Adjustment #28875other
  • T3 SADEV Sequential Gearbox #28763other
  • T3 Request for competition adjustment for the MK5 GTI FSI engine #28802engine
  • T3 Request to Add a Vehicle to the Roster (contd.) #27698other
  • B-Spec Request to change units on wheelbase for consistency with wording #28786wording
  • T3 Request to Classify 2004 Mercedes Benz 320 CLK #27663cars added
  • T3 Request Nissan 350Z Part Number change #28145induction
  • B-Spec Transmission cooler for automatic equipped cars #28171weight
  • B-Spec Spring Update for all models #28384suspension & brakes
  • B-Spec Request to Cleanup Sunroof Wording #28401wording
  • B-Spec B-Spec Balance of Performance based on 2018 and 2019 seasons #28394weight -25 lbs
  • T3 2015 + Ford EcoBoost Mustang Sway Bars #28398suspension & brakes
  • T3 Z3M Roadster Weight #28437weight
  • B-Spec Request for Model Years Updating #27850other
  • B-Spec Request to classify Min Cooper models #27861cars added
  • B-Spec remove fog lights #27947wording
  • B-Spec add sonic sedan #27948cars added
  • T3 Clarify 05-10 V8 Mustang Spring Rates Wording/Adjust Restrictor #28238induction
  • T3 Correct Touring 3 05-10 Mustang final drive #28288wording
  • B-Spec Request for Automatic Transmission Inclusion #27686other
  • B-Spec Request to Add Transmission Coolers to Automatics #27687wording
  • T3 2006 BMW E90 330i Sedan Classification #26663weight
  • T3 Please Switch the Solstice GXP as Specified in T2, to T3 #27413weight -50 lbs
  • T3 Request to Classify all Mazda RX8 Models in T3/T4 #27606cars added
  • T3 Request for 2005 Subaru STI Changes #27658tyres & wheels +50 lbs
  • T3 Request to Classify 2017 Ford Fiesta ST #27700cars added
  • B-Spec Add Yaris Sedan #26797cars added
  • B-Spec Add 2011-2016 Fiesta Sedan #26798cars added
  • B-Spec add 2015-2019 Kia Rio #26799other
  • B-Spec Error and Omissions #27858induction
  • F5 Change 600cc restrictor size #27883induction
  • T3 Clarification of On-Board Fire System for T2 #27183wording
  • T3 Mustang Ecoboost and GT Transmission #27439other
  • T3 Nissan 350Z HR Engine Restrictor Plate/Minimum Weight #27442weight +50 lbs
  • T3 Request help for the GMX5 #27572tyres & wheels
  • T3 Request for 05-10 Mustang GT Suspension Upgrades #27777weight
  • T3 Please Update the BMW SpecE46 Rules #27781tyres & wheels
  • T3 Request for 02-03 WRX Spec Line Parts #27864weight -100 lbs
  • T3 T4 RX8 Classification Error #27902wording
  • T3 Request to add Toyota 86 GT to Spec Line #27910other
  • B-Spec Request for Correction of Production Years for Mini Cooper #27226wording
  • T3 Request to add 2018 Subaru BRZ in T3 #27253other
Virginia International Raceway Runoffs 20192019-10-052:22.368Frank Schwartz · fastest of 26 · top 5 within 0.8s2:22.094David Daughtery · fastest of 24 · top 5 within 0.8s112.2John Phillips2:14.552Todd Buras · fastest of 60 · top 5 within 0.2s2:16.459Elivan Goulart · fastest of 56 · top 5 within 0.4s119.8Jim Drago-5.635squal -7.816s96.0%qual 94.5%2:04.918Marshall Mast · fastest of 20 · top 5 within 1.1s2:05.354Broderick Bauguess · fastest of 20 · top 5 within 1.6s138.2Scotty B White-16.740squal -17.450s88.2%qual 87.7%1:57.361Wiley Mcmahan · fastest of 15 · top 5 within 3.8s1:57.572Wiley Mcmahan · fastest of 15 · top 5 within 4.0s142.8Eric McRee-24.522squal -25.007s82.7%qual 82.4%
42 rule changes (B-Spec: 8, SM: 4, T3: 29, F5: 1)11 weight · 9 cars added · 5 suspension & brakes · 4 tyres & wheels · 1 engine · 1 removed · 6 wording · 5 othershowhide
  • B-Spec Request for Corrections to 9.1.10 E Item #27 D and E #27224wording
  • B-Spec Remove wording in the B-spec rules #27388wording
  • B-Spec Request to add 2013 Honda Fit model year #27491other
  • T3 Request Mazda NC MX-5 alternate transmission gear ratios #27155other
  • F5 Request for Weight Increase for Motorcycle Powered Cars #27214weight +25 lbs
  • T3 Request spare tire/wheel clarification #27012tyres & wheels
  • T3 Request guidance for 2014-2017 MK7 Volkswagen GTI #26866weight
  • B-Spec Request to allow OBX Header for 2007-10 Mini Cooper #26977other
  • T3 Request BMW e36 M3 sway bar and links #26885suspension & brakes
  • T3 Request to properly class base Porsche Cayman #26276weight
  • T3 Request to classify a 2019 Chevrolet Camaro LT-I4 Turbo 1LE #25731cars added
  • T3 T3 Civic Si weight change #26294weight
  • T3 Class Civic Si 2017+ w/ alternate cage #26449cars added
  • T3 Classify 2014-2017 MK7 Volkswagen GTI for T3 #26695cars added
  • T3 Request to allow E36 M3 in T3 prepared to BMWCCA I sport #25195cars added
  • B-Spec Request to add B-Spec to GCR 9.3.26 fuel cell #26132wording
  • SM Request to allow aftermarket fuel filters. #26370wording
  • T3 Request Mustang GT Limited Prep 2018 Classification #24431cars added
  • T3 Classify 2015+ WRX #25832cars added
  • T3 Correct Mazda MX-5 Hard Top Notes #26137weight
  • T3 Request to allow T3 06-15 Miata 17x8 wheels #26161tyres & wheels
  • T3 Request T3 06-15 Miata header #26162other
  • T3 Request Pontiac GXP same allowances to Saturn Sky #26175weight
  • T3 Consider opening class rules to allow any thermostat #26187wording
  • T3 2005-2009 Legacy GT/Spec B #26384cars added
  • T3 Cap 2016 Mazda Miata year at 2018 #26388other
  • SM Request 99-00 replacement Wire harnesses #25602engine
  • SM Organize and Clarify 9.1.7.C.1.o. #25913weight
  • SM Strike Tire Tread Language #26123tyres & wheels
  • T3 Request correction on brake sizes #26170suspension & brakes
  • B-Spec Request to classify Canadian Nissan Micra Cup cars #25216cars added
  • B-Spec Request updated Toyota Yaris Spec Lines #25483cars added
  • B-Spec Update wording of exhaust #26022wording
  • T3 Errors, Omissions, and Updates (Various) #22414weight
  • T3 Request to update SpecE46 Appendix N. with 2019 Rules #25722removed
  • T3 Request Alternative Nissan Brake Parts - 350Z #25747suspension & brakes
  • T3 Add Clarification to Spec Car Classifications Vehicle Spec #25774weight
  • T3 Clarify Subframe Bushings Permitted for T2-T4 #25800suspension & brakes
  • T3 Additional weight adjustments for T3 cars T3 weight loss #25803weight
  • T3 Request for Alternate EcoBoost Mustang Brakes #25813suspension & brakes
  • T3 Request to Add the FR-S/86 and BRZ Spec Lines to T3 #25888weight
  • T3 Request to Clarify BMW SpecE46 Tire Verbiage #26027tyres & wheels
Sonoma Raceway Runoffs 20182018-10-101:59.321Oscar Jackson · fastest of 14 · top 5 within 1.2s1:59.852Jake Pipal · fastest of 12 · top 5 within 1.0s101.0Frank Schwartz1:54.355Ken Sutherland · fastest of 48 · top 5 within 0.7s1:55.278Michael Carter · fastest of 48 · top 5 within 0.3s102.2Danny Steyn-4.574squal -4.966s96.2%qual 95.8%1:10.656Mark Drennan · fastest of 17 · top 5 within 19.6s1:49.610Mark Drennan · fastest of 17 · top 5 within 0.4s108.4Marshall Mast-10.242squal -48.665s91.5%qual 59.2%1:41.807Jeff Jorgenson · fastest of 5 · top 5 within 6.6s1:42.491David Lapham · fastest of 5 · top 5 within 9.5s113.3David Lapham-17.361squal -17.514s85.5%qual 85.3%
No rule changes on record between these events
Indianapolis Motor Speedway Runoffs 20172017-09-252:03.166David Daughtery · fastest of 18 · top 5 within 2.5s2:04.050David Daughtery · fastest of 18 · top 5 within 2.3s1:58.306Chris Haldeman · fastest of 86 · top 5 within 0.5s1:59.100Michael Gagliardo · fastest of 83 · top 5 within 0.6s-4.950squal -4.860s96.0%qual 96.1%1:52.214Rob Hines · fastest of 24 · top 5 within 0.8s1:53.286Charles Hurley · fastest of 22 · top 5 within 0.6s-10.764squal -10.952s91.3%qual 91.1%1:43.136Wiley Clinton McMahan · fastest of 38 · top 5 within 1.4s1:42.860Wiley Clinton McMahan · fastest of 37 · top 5 within 1.6s-21.190squal -20.030s82.9%qual 83.7%
No rule changes on record between these events
Mid-Ohio Sports Car Course Runoffs 20162016-09-191:46.865David Daughtery · fastest of 10 · top 5 within 1.0s1:46.930John Heinricy · fastest of 9 · top 5 within 0.6s1:40.514Justin Hille · fastest of 45 · top 5 within 0.3s1:40.764Michael Carter · fastest of 44 · top 5 within 0.3s-6.166squal -6.351s94.2%qual 94.1%1:36.741Charles Hurley · fastest of 10 · top 5 within 1.0s1:37.371Robert Schader · fastest of 10 · top 5 within 0.4s-9.559squal -10.124s91.1%qual 90.5%1:28.528Calvin Stewart · fastest of 14 · top 5 within 3.9s1:29.853Steven Thompson · fastest of 12 · top 5 within 4.5s-17.077squal -18.337s84.0%qual 82.8%
No rule changes on record between these events
Daytona International Speedway Runoffs 20152015-09-212:29.366John Heinricy · fastest of 15 · top 5 within 1.2s2:29.465John Heinricy · fastest of 15 · top 5 within 0.4s2:18.661Andrew Carbonell · fastest of 62 · top 5 within 0.6s2:24.067Todd Lamb · fastest of 59 · top 5 within 0.8s-5.398squal -10.705s96.4%qual 92.8%2:08.573Scotty B White · fastest of 5 · top 5 within 7.9s2:08.363Tom Wickersham · fastest of 5 · top 5 within 8.3s-21.102squal -20.793s85.9%qual 86.1%2:01.824W. Clint McMahan · fastest of 16 · top 5 within 3.0s2:03.298Matthew Strand · fastest of 15 · top 5 within 4.9s-26.167squal -27.542s82.5%qual 81.6%

By track

TrackEvents Typical % of B-Spec Best Latest 
Road America4100.0%100.0%Runoffs 2020100.0%Runoffs 2026
Virginia International Raceway3100.0%100.0%Runoffs 2019100.0%Runoffs 2023
Indianapolis Motor Speedway2100.0%100.0%Runoffs 2017100.0%Runoffs 2021
Daytona International Speedway1100.0%100.0%Runoffs 2015100.0%Runoffs 2015
Mid-Ohio Sports Car Course1100.0%100.0%Runoffs 2016100.0%Runoffs 2016
Sonoma Raceway1100.0%100.0%Runoffs 2018100.0%Runoffs 2018
About this data
Every event the class ran, at any track, oldest to newest on the chart and newest first in the table. Each point is the class's best lap as a share of B-Spec's best on the same day: the weather and the day cancel out, so one figure compares across years where lap times cannot; a class that suits one track more than another still reads differently there. It still moves when the yardstick's own balance changes or its field thins, and an event the yardstick did not run has no point. A best from fewer than three cars is greyed. The rule changes that took effect between two events are folded between their rows.