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BoP Lab / Classes / B-Spec

B-Spec vs FF vs SM vs EP 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×vsEP×FAFCFE2vsFF×FPFVFXGT1GT2GTXHPPP2vsSM×SMXSRF3STLSTUT1T2T3T4Show 51 inactive classes
Series
Reference · what % is measured against, 12 events
Tracks · untick to narrow

Closest to the field: B-Spec 100.0% of B-Spec John Heinricy, Daytona International Speedway Runoffs 2015 race · FF 82.0% of B-Spec Tim Kautz, Daytona International Speedway Runoffs 2015 qualifying · SM 92.8% of B-Spec Andrew Carbonell, Daytona International Speedway Runoffs 2015 qualifying · EP 82.9% of B-Spec Kip Van Steenburg, Daytona International Speedway Runoffs 2015 qualifying

1:402:002:202:403:0025 rule changes between Runoffs 2018 and Runoffs 201925 ▾37 rule changes between Runoffs 2019 and Runoffs 202037 ▾40 rule changes between Runoffs 2020 and Runoffs 202140 ▾32 rule changes between Runoffs 2021 and Runoffs 202232 ▾36 rule changes between Runoffs 2022 and Runoffs 202336 ▾50 rule changes between Runoffs 2023 and Runoffs 202450 ▾45 rule changes between Runoffs 2024 and Runoffs 202545 ▾41 rule changes between Runoffs 2025 and Runoffs 202641 ▾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)FF race best at Runoffs 2015: 2:03.383 (Rick Payne)FF race best at Runoffs 2016: 1:30.133 (Neil Verhagen)FF race best at Runoffs 2017: 1:44.524 (Jonathon Kotyk)FF race best at Runoffs 2018: 1:42.049 (Jonathon Kotyk)FF race best at Runoffs 2019: 2:20.474 (Jonathan Kotyk)FF race best at Runoffs 2020: 2:24.268 (Jeffrey Bartz)FF race best at Runoffs 2021: 1:55.676 (Jonathan Kotyk)FF race best at Runoffs 2022: 2:18.358 (Jonathan Kotyk)FF race best at Runoffs 2023: 2:00.583 (Jonathan Kotyk)FF race best at Runoffs 2024: 2:22.057 (Sebastian Mateo Naranjo)FF race best at Runoffs 2025: 2:25.541 (Calvin Kautz)FF race best at Runoffs 2026: 2:23.686 (Nathan Down)FF qualifying best at Runoffs 2015: 2:02.489 (Tim Kautz)FF qualifying best at Runoffs 2016: 1:29.213 (Neil Verhagen)FF qualifying best at Runoffs 2017: 1:44.601 (Zach Holden)FF qualifying best at Runoffs 2018: 1:41.612 (Jonathon Kotyk)FF qualifying best at Runoffs 2019: 1:59.563 (Tyler O'Connor)FF qualifying best at Runoffs 2020: 2:22.916 (Simon Sikes)FF qualifying best at Runoffs 2021: 1:44.359 (Jonathan Kotyk)FF qualifying best at Runoffs 2022: 1:59.215 (Jonathan Kotyk)FF qualifying best at Runoffs 2023: 1:59.249 (Nolan Allaer)FF qualifying best at Runoffs 2024: 2:22.552 (Calvin Kautz)FF qualifying best at Runoffs 2025: 2:24.905 (Jonathan Kotyk)FF qualifying best at Runoffs 2026: 2:23.047 (David Ybarra)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)EP race best at Runoffs 2015: 2:05.109 (Kip Van Steenburg)EP race best at Runoffs 2016: 1:34.266 (Michael Galati)EP race best at Runoffs 2017: 1:50.396 (Matt Reynolds)EP race best at Runoffs 2018: 1:46.518 (Glen McCready)EP race best at Runoffs 2019: 2:01.631 (Jesse Prather)EP race best at Runoffs 2020: 2:29.047 (Jesse Prather)EP race best at Runoffs 2021: 1:49.928 (Jesse Prather)EP race best at Runoffs 2022: 2:30.855 (Jesse Prather)EP race best at Runoffs 2023: 2:04.050 (Greg Ira)EP race best at Runoffs 2024: 2:27.869 (Tyler Ladd)EP race best at Runoffs 2025: 2:28.756 (Tyler Ladd)EP race best at Runoffs 2026: 2:27.869 (Jon Brakke)EP qualifying best at Runoffs 2015: 2:03.794 (Kip Van Steenburg)EP qualifying best at Runoffs 2016: 1:33.847 (Michael Galati)EP qualifying best at Runoffs 2017: 1:49.597 (Matt Reynolds)EP qualifying best at Runoffs 2018: 1:45.828 (Glen McCready)EP qualifying best at Runoffs 2019: 2:00.987 (Jesse Prather)EP qualifying best at Runoffs 2020: 2:27.322 (Jesse Prather)EP qualifying best at Runoffs 2021: 1:48.181 (Jesse Prather)EP qualifying best at Runoffs 2022: 2:02.326 (Jesse Prather)EP qualifying best at Runoffs 2023: 2:03.215 (John Hainsworth)EP qualifying best at Runoffs 2024: 2:26.803 (Tyler Ladd)EP qualifying best at Runoffs 2025: 2:27.293 (Jon Brakke)EP qualifying best at Runoffs 2026: 2:29.239 (Jon Brakke)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-SpecFFSMEPsolid race · dashed qualifying · slower is lower
85%90%95%100%25 rule changes between Runoffs 2018 and Runoffs 201925 ▾37 rule changes between Runoffs 2019 and Runoffs 202037 ▾40 rule changes between Runoffs 2020 and Runoffs 202140 ▾32 rule changes between Runoffs 2021 and Runoffs 202232 ▾36 rule changes between Runoffs 2022 and Runoffs 202336 ▾50 rule changes between Runoffs 2023 and Runoffs 202450 ▾45 rule changes between Runoffs 2024 and Runoffs 202545 ▾41 rule changes between Runoffs 2025 and Runoffs 202641 ▾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)FF race best at Runoffs 2015: 82.5% of B-Spec's (Rick Payne)FF race best at Runoffs 2016: 84.3% of B-Spec's (Neil Verhagen)FF race best at Runoffs 2017: 84.3% of B-Spec's (Jonathon Kotyk)FF race best at Runoffs 2018: 85.1% of B-Spec's (Jonathon Kotyk)FF race best at Runoffs 2019: 98.9% of B-Spec's (Jonathan Kotyk)FF race best at Runoffs 2020: 83.5% of B-Spec's (Jeffrey Bartz)FF race best at Runoffs 2021: 93.3% of B-Spec's (Jonathan Kotyk)FF race best at Runoffs 2022: 96.2% of B-Spec's (Jonathan Kotyk)FF race best at Runoffs 2023: 83.9% of B-Spec's (Jonathan Kotyk)FF race best at Runoffs 2024: 82.6% of B-Spec's (Sebastian Mateo Naranjo)FF race best at Runoffs 2025: 83.8% of B-Spec's (Calvin Kautz)FF race best at Runoffs 2026: 83.7% of B-Spec's (Nathan Down)FF qualifying best at Runoffs 2015: 82.0% of B-Spec's (Tim Kautz)FF qualifying best at Runoffs 2016: 83.5% of B-Spec's (Neil Verhagen)FF qualifying best at Runoffs 2017: 84.9% of B-Spec's (Zach Holden)FF qualifying best at Runoffs 2018: 85.2% of B-Spec's (Jonathon Kotyk)FF qualifying best at Runoffs 2019: 84.0% of B-Spec's (Tyler O'Connor)FF qualifying best at Runoffs 2020: 83.1% of B-Spec's (Simon Sikes)FF qualifying best at Runoffs 2021: 84.8% of B-Spec's (Jonathan Kotyk)FF qualifying best at Runoffs 2022: 83.4% of B-Spec's (Jonathan Kotyk)FF qualifying best at Runoffs 2023: 83.6% of B-Spec's (Nolan Allaer)FF qualifying best at Runoffs 2024: 82.9% of B-Spec's (Calvin Kautz)FF qualifying best at Runoffs 2025: 84.1% of B-Spec's (Jonathan Kotyk)FF qualifying best at Runoffs 2026: 83.2% of B-Spec's (David Ybarra)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)EP race best at Runoffs 2015: 83.7% of B-Spec's (Kip Van Steenburg)EP race best at Runoffs 2016: 88.2% of B-Spec's (Michael Galati)EP race best at Runoffs 2017: 89.0% of B-Spec's (Matt Reynolds)EP race best at Runoffs 2018: 88.9% of B-Spec's (Glen McCready)EP race best at Runoffs 2019: 85.6% of B-Spec's (Jesse Prather)EP race best at Runoffs 2020: 86.2% of B-Spec's (Jesse Prather)EP race best at Runoffs 2021: 88.7% of B-Spec's (Jesse Prather)Off the chart: EP race best at Runoffs 2022: 104.9% of B-Spec's (Jesse Prather)EP race best at Runoffs 2023: 86.3% of B-Spec's (Greg Ira)EP race best at Runoffs 2024: 86.0% of B-Spec's (Tyler Ladd)EP race best at Runoffs 2025: 85.7% of B-Spec's (Tyler Ladd)EP race best at Runoffs 2026: 86.2% of B-Spec's (Jon Brakke)EP qualifying best at Runoffs 2015: 82.9% of B-Spec's (Kip Van Steenburg)EP qualifying best at Runoffs 2016: 87.8% of B-Spec's (Michael Galati)EP qualifying best at Runoffs 2017: 89.0% of B-Spec's (Matt Reynolds)EP qualifying best at Runoffs 2018: 88.7% of B-Spec's (Glen McCready)EP qualifying best at Runoffs 2019: 85.0% of B-Spec's (Jesse Prather)EP qualifying best at Runoffs 2020: 85.6% of B-Spec's (Jesse Prather)EP qualifying best at Runoffs 2021: 87.9% of B-Spec's (Jesse Prather)EP qualifying best at Runoffs 2022: 85.6% of B-Spec's (Jesse Prather)EP qualifying best at Runoffs 2023: 86.3% of B-Spec's (John Hainsworth)EP qualifying best at Runoffs 2024: 85.3% of B-Spec's (Tyler Ladd)EP qualifying best at Runoffs 2025: 85.5% of B-Spec's (Jon Brakke)EP qualifying best at Runoffs 2026: 86.8% of B-Spec's (Jon Brakke)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-SpecFFSMEPsolid 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-SpecFFSMEP
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%)2:23.047David Ybarra · fastest of 20 · top 5 within 1.4s-1.858s (-1.28%)2:23.686Nathan Down · fastest of 20 · top 5 within 1.6s-1.855s (-1.27%)138.9Tazio Stefanelli+0.5 mph (+0.3%)-27.947squal -28.940s83.7%qual 83.2%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%2:29.239Jon Brakke · fastest of 15 · top 5 within 5.2s+1.946s (+1.32%)2:27.869Jon Brakke · fastest of 15 · top 5 within 5.2s-0.887s (-0.60%)137.0Jon Brakke-3.8 mph (-2.7%)-23.764squal -22.748s86.2%qual 86.8%
41 rule changes (B-Spec: 16, FF: 2, SM: 2, EP: 21)11 weight · 6 engine · 6 induction · 6 suspension & brakes · 2 tyres & wheels · 4 wording · 6 othershowhide
  • EP Mini Cooper Compression Ratio #40517engine
  • EP 1996-2000 Honda Civic (CX, DX, VP, LX) with Engine Code D16Y7 #40322engine
  • EP 1275 Midget/Sprit Alternate intake manifold E/O #40370induction
  • EP HP Honda Civic (92-95) #40464weight -70 lbs
  • FF Clarification in FF Kent 1600 Compression Ratio Paragraph #40293engine
  • SM Rear Toe Link #40271other
  • B-Spec ECU Location in Mazda2 #40034engine
  • B-Spec Allow Cars With Combined Brake/Clutch Reservoir to Separate. #40122suspension & brakes
  • EP Honda S2000 Hardtop #40138other
  • B-Spec Race Memo RM 26-01 B-Spec Mini Cooper Weight Adjustments with OEM #40070weight
  • EP Miata track width - errors and omissions #39976wording
  • EP Triumph GT6 Spec Change. #40098induction
  • SM Part Number Change Request #39914wording
  • 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
  • B-Spec C-Spec Rear Sway Bars #39652suspension & brakes
  • B-Spec Notes section cleanup #39062weight
  • B-Spec 2026 BOP Recommendations #39475weight +25 lbs
  • B-Spec Expire NLA Mazda 2 Headers #39582weight
  • EP Request to Update E30 BMW Throttle Body Diameter Verbiage #39363induction
  • FF Formula F Alternative Tire Rule Proposed Clarifications #39281tyres & wheels
  • EP TR2 Notes E&O #39180weight
  • EP Balance of Power #39187weight +50 lbs
  • 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
  • EP Please Lower Weight of 280Z #38871weight -160 lbs
  • EP Miata Weight Adjustment Follow Up #38949weight -25 lbs
  • EP Weight Break for 1098 Midget / Sprite #38970weight -80 lbs
  • EP HP Volvo 142 spec omission #38994engine
  • EP HP Mini DOHC 1.6 #38996engine
  • EP Add to Rabbit description #39019wording
  • EP Clean-up 9.1.5.E.7e #39025suspension & brakes
  • EP Add TB size to Ford Mustang (94-98) Spec Line #39130induction
  • EP HP Plymouth Arrow spec omission #38995wording
  • EP Add Wheel Diameter to Appendix G #39008tyres & wheels
  • EP Add TB ID tolerance to general Prod rules #39009induction
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%)2:24.905Jonathan Kotyk · fastest of 17 · top 5 within 1.1s+2.353s (+1.65%)2:25.541Calvin Kautz · fastest of 16 · top 5 within 0.5s+3.484s (+2.45%)138.4Tazio Stefanelli-2.3 mph (-1.6%)-28.072squal -27.306s83.8%qual 84.1%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%2:27.293Jon Brakke · fastest of 21 · top 5 within 2.1s+0.490s (+0.33%)2:28.756Tyler Ladd · fastest of 19 · top 5 within 1.9s+0.887s (+0.60%)140.8Jon Brakke+0.1 mph (+0.1%)-24.857squal -24.918s85.7%qual 85.5%
45 rule changes (B-Spec: 23, FF: 4, SM: 4, EP: 14)12 weight · 8 induction · 5 suspension & brakes · 3 tyres & wheels · 2 cars added · 1 engine · 3 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
  • EP BMW Z4 update #38490induction
  • EP EP Fiat 124 Spider Competition Adjustment Request #38498weight -50 lbs
  • 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
  • EP Base Weight Adjustment for H-Production X1/9 Spec Lines #38255weight -50 lbs
  • 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
  • FF Page 228, FF tire rule 9.1.1.10.e #38251tyres & wheels
  • SM Clarify Tire Marking Regs #38005tyres & wheels
  • 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
  • EP Request for Classification of Chevrolet Spark #37755cars added
  • EP Request to Lower Ford Festiva Minimum Weight to 1600 LBS #37939weight -100 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
  • EP Request Competition Adjustment to BMW Z3 2.5L #37120induction
  • EP Interpretation of Production Rules on Mirrors #37235other
  • EP Weight Reduction for Honda S2000 #37466weight
  • EP Mazda 1999 Miata 1.8L #37488weight -50 lbs
  • FF Formula F Proposal to Invite Older Cars Via a Tire Rule Change #37802tyres & wheels
  • EP Effective date for Jan 2025 GCR updates #37654induction
  • 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
  • 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
  • EP Request to Reduce Weight of BMW 325i/is E30 (84-91) Spec Line #37119weight -50 lbs
  • EP Triumph GT6 Adjustments #37112weight
  • SM E&O SMX Regs 9.1.7.1.D.5.u-.w #37070other
  • B-Spec Scion IA/Toyota Yaris/Mazda 2 DY chassis suspension #35780other
  • B-Spec Clean up 07-08 Honda Fit AT Notes Section #36542induction
  • EP 1275 HP Spridget Level 2 Only #36518other
  • EP NA Miata Track Width Correction #36902wording
  • FF Change FF/FC Weight with Sequential Gearbox #36651weight
  • FF Alternative Oversize Honda Fit Pistons #37064weight
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%)2:22.552Calvin Kautz · fastest of 13 · top 5 within 1.1s-0.364s (-0.25%)2:22.057Sebastian Mateo Naranjo · fastest of 13 · top 5 within 0.6s-2.211s (-1.53%)140.7Calvin Kautz+2.6 mph (+1.9%)-29.832squal -29.475s82.6%qual 82.9%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%2:26.803Tyler Ladd · fastest of 16 · top 5 within 4.1s-0.519s (-0.35%)2:27.869Tyler Ladd · fastest of 16 · top 5 within 3.6s-1.178s (-0.79%)140.7Bill Miller-1.0 mph (-0.7%)-24.020squal -25.224s86.0%qual 85.3%
50 rule changes (B-Spec: 30, FF: 2, SM: 4, EP: 14)11 weight · 7 engine · 6 suspension & brakes · 5 tyres & wheels · 4 induction · 3 cars added · 2 removed · 3 wording · 9 othershowhide
  • FF Update to FF EGR Blanking Plate Rule #36633engine
  • 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
  • EP Errant entry in HP production line item #36231other
  • 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
  • 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
  • EP NIssan 300ZX Z31 to EP #35830cars added
  • EP RX7 1993 and Up Request In EP Spec Lines, classify #36031cars added
  • EP Clean-up Multiple EP RX-8 Spec Lines In EP #36156wording
  • B-Spec Delete trim levels/update language for spec lines #35746other
  • B-Spec Wheel Rules #36066tyres & wheels
  • 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
  • EP GCR Correction - Redundant HP Spec Lines #35623engine
  • 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
  • EP Update 1988-1991 Civic to Match 1988-1991 CRX #35399weight
  • 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
  • EP Request to Review Z3 2.5 Spec Line #35073weight +50 lbs
  • EP Miata Alternate Head #35253weight -50 lbs
  • EP Triumph GT6 Adjustments #35255weight
  • EP Honda S2000 throttle body #35272induction
  • EP Correction within Triumph TR8 Spec Line #35315engine
  • EP Correction to EP 924S/944 Spec Line #35317weight
  • FF Honda Fit Oversize Piston Rings #35305other
  • B-Spec Mazda 3i 2010-2013 5-Speed Manual Gear Ratios #34820other
  • B-Spec Error Correction #34955engine
  • EP Porsche 944/924S Rule Change Request #35002weight
  • EP Triumph GT6 Adjustments #35054weight -30 lbs
  • 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%)1:59.249Nolan Allaer · fastest of 8 · top 5 within 2.8s+0.034s (+0.03%)2:00.583Jonathan Kotyk · fastest of 8 · top 5 within 0.4s-17.775s (-12.85%)138.4Calvin Kautz+0.1 mph (+0.1%)-23.149squal -23.458s83.9%qual 83.6%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%2:03.215John Hainsworth · fastest of 24 · top 5 within 4.3s+0.889s (+0.73%)2:04.050Greg Ira · fastest of 22 · top 5 within 5.3s-26.805s (-17.77%)144.6Greg Ira+3.1 mph (+2.2%)-19.682squal -19.492s86.3%qual 86.3%
36 rule changes (B-Spec: 21, FF: 1, SM: 1, EP: 13)10 weight · 6 induction · 5 engine · 5 suspension & brakes · 2 tyres & wheels · 1 cars added · 1 wording · 6 othershowhide
  • B-Spec Initial car classifications and spec lines #34461weight
  • EP Hub Note Clean Up In EP TR8 Spec Line #34649wording
  • EP Triumph GT6 Adjustments #34662other
  • EP Triumph GT6 Adjustments: Brakes #34663suspension & brakes
  • B-Spec Hyundai Accent Restrictor Plate #34331induction
  • B-Spec Hyundai Accent 2012 Model #34332other
  • EP Correct Intake Valve Size on 1500cc Midget/Spitfire #34419induction
  • 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
  • EP 914-6 Valve Size Correction #34185engine
  • B-Spec T5 Rules Feedback #33595weight
  • EP Investigate Parity of Z3 #33343induction
  • B-Spec Early Model Mini #33363other
  • B-Spec Helper Versus Tender springs. #33866suspension & brakes
  • FF Add Fast Forward Part Numbers for Honda Fit Engine #33752engine
  • B-Spec Split up Spec lines for Automatic/Manual 2nd Gen Fit #33292other
  • B-Spec Request to Split Spec Lines for Automatic Models #33270weight
  • B-Spec Tire Rule Request #33350tyres & wheels
  • EP Revise 79-85 RX7 Brake Spec Line Allowance #33293suspension & brakes
  • EP Request alternate carburetors for EP 280z #33405engine
  • EP Fuel Injection 12a Mazda RX3 #33434engine
  • EP Mazda RX3 - Weight Reduction #33436weight -50 lbs
  • EP Request TR8 Dry Sump Allowance #33460other
  • EP Review Limited Prep Port Matching Rules #33600induction
  • EP 280ZX Classification Request #33611weight
  • SM BOP for NB1 and NB2 #32309weight
  • B-Spec Utilize the Data - Make BoP Changes #32179weight -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%)1:59.215Jonathan Kotyk · fastest of 13 · top 5 within 1.2s-0.348s (-0.29%)2:18.358Jonathan Kotyk · fastest of 12 · top 5 within 2.4s-2.116s (-1.51%)138.3Tim Kautz+2.2 mph (+1.6%)-5.461squal -23.730s96.2%qual 83.4%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%2:02.326Jesse Prather · fastest of 17 · top 5 within 3.2s+1.339s (+1.11%)2:30.855Jesse Prather · fastest of 15 · top 5 within 2.5s+29.224s (+24.03%)141.5Jesse Prather-6.0 mph (-4.1%)+7.036squal -20.619s104.9%qual 85.6%
32 rule changes (B-Spec: 10, SM: 1, EP: 21)7 induction · 6 cars added · 6 suspension & brakes · 4 engine · 3 weight · 2 tyres & wheels · 2 wording · 2 othershowhide
  • EP Request to classify VW New Beetle 2.5L in EP #32725cars added
  • EP Request Rotary Injection on Dual Y manifold #32775engine
  • EP Request for Corrado Stroke & Displacement Correction #32985engine
  • B-Spec Request new Mazda Rear Swaybar #32769suspension & brakes
  • EP Subaru BRZ Model Years #32500other
  • B-Spec Request to Remove Part Numbers from Kia/Hyundai Spec Lines #32378induction
  • EP EP MX-5 Global Cup Car #32218weight
  • EP Please Class BMW 128i in EP #32370cars added
  • EP Inconsistency in Body Work Descriptions #32396other
  • EP Mazda RX8 with 13b Rotary #32170induction
  • EP Request Idle control valve clarification #32178engine
  • SM Update GCR Section 9.1.7.3.A.1. #32217suspension & brakes
  • 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
  • EP EP Adjustments #31858induction
  • EP 1999 3.8L Ford Mustang to EP? #31635weight
  • EP Improved Touring Tires #32064tyres & wheels
  • 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
  • EP Throttle Body and Idle Air #31800induction
  • EP Porsche 968 Engine Questions #31831engine
  • EP Request weight reduction for 1979-1985 Mazda RX-7 #31833weight
  • B-Spec Request to add 2007-2008 Honda Fit #30853cars added
  • EP Porsche 968 Engine Questions #31478induction
  • EP PCS E. 2. n. 4. Add Axle Shaft to Allow FWD the Same Freedom #31592tyres & wheels
  • EP BMW Z3 2.5L Spec Line #31724induction
  • EP 944S2 Restrictor #31396induction
  • EP Classing Clarification for 1986 Toyota Corolla FX16 #31527cars added
  • B-Spec Rules Clarification of Body and Camber Plates #30814suspension & brakes
  • EP E&O; MR2 Track #31120wording
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 Oliveira1:44.359Jonathan Kotyk · fastest of 24 · top 5 within 1.1s-0.242s (-0.23%)1:55.676Jonathan Kotyk · fastest of 23 · top 5 within 1.8s+11.152s (+10.67%)141.6Nicholas Sheppard-8.295squal -18.762s93.3%qual 84.8%1:57.695Brian 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%1:48.181Jesse Prather · fastest of 31 · top 5 within 3.2s-1.416s (-1.29%)1:49.928Jesse Prather · fastest of 27 · top 5 within 0.9s-0.468s (-0.42%)143.4Jon Brakke-14.043squal -14.940s88.7%qual 87.9%
40 rule changes (B-Spec: 22, FF: 3, SM: 1, EP: 14)8 suspension & brakes · 7 weight · 5 cars added · 5 induction · 4 engine · 2 tyres & wheels · 4 wording · 5 othershowhide
  • B-Spec Rules Clarification of Body and Camber Plates #30814suspension & brakes
  • EP Request to Allow F22c Engine for 2000-2003 Honda S2000 #30548engine
  • EP Request a review of the S14 240SX in EP. #30873weight -200 lbs
  • B-Spec B-Spec Mazda2 Header Update #30884weight
  • EP Lotus/Caterham 7 America Request #30392engine
  • EP Reclassify Daimler SP 250 #30721cars added
  • 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
  • EP Clarify Application of Percentage Based Weight Penalties #30669weight
  • EP Change Classification of 84-87 Mazda 626 from FP to HP #30350cars added
  • EP Fiat X1/9 brake rotors #30423suspension & brakes
  • EP NC MX-5 year range correction E&O #30503wording
  • 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
  • EP Please Classify Mazda3 in FP #30165cars added
  • FF Kent crankshaft clarification #30426wording
  • SM Updates - Obsolete Parts & BOP Parts #30438other
  • B-Spec Spec Tire Recommendation #29480tyres & wheels
  • B-Spec Make restrictor thickness unique for B Spec #30349induction
  • 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
  • EP Alternate Front Brake Rotors and Calipers for EP AH 3000 #29893suspension & brakes
  • B-Spec Request clarification of B14 shock package for any and all cars #29483suspension & brakes
  • B-Spec Cleanup of spec lines #29495wording
  • EP Mk2 VW Consistency and Cleanup of FP and HP Spec Lines #29195weight -50 lbs
  • EP Correct Wording for Level 1 and Level 2 Induction Systems #29406induction
  • EP Weight Reduction for Datsun Roadster #29409weight -75 lbs
  • EP EP TR8 Adjustment #29512weight -100 lbs
  • FF Allow Optional Coolant Bleed Line to Correct a Known Problem #29673engine
  • FF Clarification regarding Honda LC1 ECU implementation date #29684engine
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 Iversen2:22.916Simon Sikes · fastest of 14 · top 5 within 1.6s2:24.268Jeffrey Bartz · fastest of 14 · top 5 within 0.4s138.1Jeffrey Bartz-28.579squal -29.117s83.5%qual 83.1%2:42.209Kyle 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%2:27.322Jesse Prather · fastest of 20 · top 5 within 2.5s2:29.047Jesse Prather · fastest of 20 · top 5 within 2.8s141.7Jesse Prather-23.800squal -24.711s86.2%qual 85.6%
37 rule changes (B-Spec: 17, FF: 4, SM: 2, EP: 14)8 engine · 7 induction · 6 cars added · 3 suspension & brakes · 2 tyres & wheels · 2 weight · 6 wording · 3 othershowhide
  • EP 84-87 Toyota Corolla HP Wheel Diameter Allowance Proposal E&O #29458tyres & wheels
  • SM Radiator E&O Clarifications #29294engine
  • B-Spec Allowance Versus Requirement for R56 Mini Cooper #29127induction
  • EP EP BMW Z3 Rule Clarification #28998engine
  • FF Clarification regarding Honda LC1 ECU implementation #29135engine
  • SM Modifications to prevent failures of Rear Brake Caliper Pin #28953suspension & brakes
  • EP Request to Classify Porsche 911 2.0L #28456cars added
  • B-Spec Request to change units on wheelbase for consistency with wording #28786wording
  • EP BMW Cylinder Head Casting and Part Numbers #28708engine
  • 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
  • EP Request to Classify 1990-1994 Mazda Protege #28381cars added
  • EP Error in Mini Cooper Spec Line #28713wording
  • EP Caterham 7 Spec Line #28498engine
  • FF E&O FF Kent Engine alternator language #28204engine
  • 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
  • EP Request to Review Horsepower Parity #27662induction
  • EP E36 (92-95) Brakes Errors and Omissions #28058suspension & brakes
  • EP Request to allow 40 DCOE carb for the Datsun 510 #28195induction
  • EP Add Throttle Body Size these EP BMW Spec Lines #28422induction
  • FF Honda Racing HPD low cost ECU proposal #27563engine
  • FF Update rain tire designation #28443tyres & wheels
  • B-Spec Request for Automatic Transmission Inclusion #27686other
  • B-Spec Request to Add Transmission Coolers to Automatics #27687wording
  • EP Request for Help for Datsun 1200 #27934induction
  • 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
  • EP Request to List Mazda Miata Throttle Body Size #27907induction
  • B-Spec Request for Correction of Production Years for Mini Cooper #27226wording
  • EP Re-organize Prep2 Cylinder Head Rules for Clarity & Consistency #27661engine
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 Phillips1:59.563Tyler O'Connor · fastest of 14 · top 5 within 1.4s2:20.474Jonathan Kotyk · fastest of 14 · top 5 within 6.3s136.2Derek Ketchie-1.620squal -22.805s98.9%qual 84.0%2:14.552Todd 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%2:00.987Jesse Prather · fastest of 29 · top 5 within 2.2s2:01.631Jesse Prather · fastest of 24 · top 5 within 1.4s147.5Kip Van Steenburg-20.463squal -21.381s85.6%qual 85.0%
25 rule changes (B-Spec: 8, FF: 3, SM: 4, EP: 10)4 engine · 3 cars added · 3 induction · 2 tyres & wheels · 2 weight · 1 suspension & brakes · 6 wording · 4 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
  • EP Request bodywork for Austin Healey Bugeye Sprite MK1 #27106other
  • EP Request to classify the GMX5 2019 #27263cars added
  • EP level one susp. component rule #27270suspension & brakes
  • EP Clarification of Carb Rules - Prep 1 #27300induction
  • EP Clarification of Carb Rules - Prep 2 #27301induction
  • EP Request Miata Eligibility - 2003 #27121other
  • B-Spec Request to allow OBX Header for 2007-10 Mini Cooper #26977other
  • EP Allow Firewall Modification for Fitment of 13B into RX8 #26726engine
  • EP Rollcenter Correction Clarification #25873tyres & wheels
  • EP Hardtops #26476wording
  • B-Spec Request to add B-Spec to GCR 9.3.26 fuel cell #26132wording
  • EP Request for Competition Adjustment for 2nd Generation RX7 #25935weight -50 lbs
  • SM Request to allow aftermarket fuel filters. #26370wording
  • FF Request for Oversize Honda Fit Pistons #25810engine
  • FF Heat Shield - Fit Intake #26102induction
  • FF Request catch cans/tanks clarification #26158engine
  • 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
  • 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
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 Schwartz1:41.612Jonathon Kotyk · fastest of 22 · top 5 within 1.7s1:42.049Jonathon Kotyk · fastest of 22 · top 5 within 1.3s115.7Denny Renfrow-17.803squal -17.709s85.1%qual 85.2%1:54.355Ken 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%1:45.828Glen McCready · fastest of 18 · top 5 within 4.3s1:46.518Glen McCready · fastest of 16 · top 5 within 2.8s106.5Aaron Downey-13.334squal -13.493s88.9%qual 88.7%
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 2.3s1:44.601Zach Holden · fastest of 36 · top 5 within 1.2s1:44.524Jonathon Kotyk · fastest of 36 · top 5 within 0.5s-19.526squal -18.565s84.3%qual 84.9%1:58.306Chris 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%1:49.597Matt Reynolds · fastest of 44 · top 5 within 1.2s1:50.396Matt Reynolds · fastest of 45 · top 5 within 0.5s-13.654squal -13.569s89.0%qual 89.0%
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 0.6s1:29.213Neil Verhagen · fastest of 14 · top 5 within 2.1s1:30.133Neil Verhagen · fastest of 14 · top 5 within 1.4s-16.797squal -17.652s84.3%qual 83.5%1:40.514Justin 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%1:33.847Michael Galati · fastest of 25 · top 5 within 0.8s1:34.266Michael Galati · fastest of 23 · top 5 within 1.3s-12.664squal -13.018s88.2%qual 87.8%
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 0.4s2:02.489Tim Kautz · fastest of 25 · top 5 within 1.1s2:03.383Rick Payne · fastest of 22 · top 5 within 0.8s-26.082squal -26.877s82.5%qual 82.0%2:18.661Andrew 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%2:03.794Kip Van Steenburg · fastest of 29 · top 5 within 3.2s2:05.109Kip Van Steenburg · fastest of 28 · top 5 within 3.3s-24.356squal -25.572s83.7%qual 82.9%

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.