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BoP Lab / Classes / FA

FA vs B-Spec vs AS pace at every track

Lap times across years say as much about the weather as the class. % of FA is each class's best lap as a share of FA'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)
vsAS×vsB-Spec×EP+FA×FC+FE2+FF+FP+FV+FX+GT1+GT2+GTX+HP+P+P2+SM+SMX+SRF3+STL+STU+T1+T2+T3+T4+Show 51 inactive classes
Series
Reference · what % is measured against
Tracks · untick to narrow

Closest to the field: FA 100.0% of FA Tyler Hunter, Daytona International Speedway Runoffs 2015 race · B-Spec 132.5% of FA Riley Salyer, Virginia International Raceway Runoffs 2022 race · AS 113.0% of FA Tom Sloe, Daytona International Speedway Runoffs 2015 qualifying

1:201:402:002:202:403:0019 rule changes between Runoffs 2018 and Runoffs 201919 ▾48 rule changes between Runoffs 2019 and Runoffs 202048 ▾58 rule changes between Runoffs 2020 and Runoffs 202158 ▾26 rule changes between Runoffs 2021 and Runoffs 202226 ▾32 rule changes between Runoffs 2022 and Runoffs 202332 ▾41 rule changes between Runoffs 2023 and Runoffs 202441 ▾37 rule changes between Runoffs 2024 and Runoffs 202537 ▾36 rule changes between Runoffs 2025 and Runoffs 202636 ▾FA race best at Runoffs 2015: 1:48.162 (Tyler Hunter)FA race best at Runoffs 2016: 1:19.009 (Ryan Norman)FA race best at Runoffs 2017: 1:31.365 (Keith Grant)FA race best at Runoffs 2018: 1:29.924 (Mirl Swan)FA race best at Runoffs 2019: 1:43.107 (Dario Cangialosi)FA race best at Runoffs 2020: 2:04.746 (Spencer Brockman)FA race best at Runoffs 2021: 1:30.650 (James French)FA race best at Runoffs 2022: 1:48.507 (Alex Mayer)FA race best at Runoffs 2024: 2:01.790 (Dudley Fleck)FA race best at Runoffs 2025: 2:02.654 (Hans Peter)FA race best at Runoffs 2026: 2:03.334 (James French)FA qualifying best at Runoffs 2015: 1:47.758 (Tyler Hunter)Off the chart: FA qualifying best at Runoffs 2016: 1:14.920 (Ryan Norman)FA qualifying best at Runoffs 2017: 1:29.957 (Sedat Yelkin)FA qualifying best at Runoffs 2018: 1:28.176 (Mirl Swan)FA qualifying best at Runoffs 2019: 1:41.545 (Dario Cangialosi)FA qualifying best at Runoffs 2020: 2:04.274 (Spencer Brockman)FA qualifying best at Runoffs 2021: 1:29.701 (James French)FA qualifying best at Runoffs 2022: 1:44.703 (Chip Romer)FA qualifying best at Runoffs 2024: 2:01.560 (Hans Peter)FA qualifying best at Runoffs 2025: 2:00.923 (Hans Peter)FA qualifying best at Runoffs 2026: 2:02.513 (Dudley Fleck)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)AS race best at Runoffs 2015: 2:02.922 (Andy McDermid)AS race best at Runoffs 2016: 1:33.424 (Edward Hosni)AS race best at Runoffs 2017: 1:51.507 (Bryan Long)AS race best at Runoffs 2018: 1:50.345 (John Heinricy)AS race best at Runoffs 2019: 2:03.900 (James Jost)AS race best at Runoffs 2020: 2:27.668 (Gregory Eaton)AS race best at Runoffs 2021: 1:50.606 (Gregory Eaton)AS race best at Runoffs 2022: 2:04.578 (Gregory Eaton)AS race best at Runoffs 2023: 2:04.120 (Gregory Eaton)AS race best at Runoffs 2024: 2:26.429 (Gregory Eaton)AS race best at Runoffs 2025: 2:29.232 (Gregory Eaton)AS race best at Runoffs 2026: 2:28.471 (Andrew McDermid)AS qualifying best at Runoffs 2015: 2:01.746 (Tom Sloe)AS qualifying best at Runoffs 2016: 1:30.651 (Tom Sloe)AS qualifying best at Runoffs 2017: 1:45.220 (James Jost)AS qualifying best at Runoffs 2018: 1:47.782 (Andrew McDermid)AS qualifying best at Runoffs 2019: 2:02.938 (Gregory Eaton)AS qualifying best at Runoffs 2020: 2:27.045 (Gregory Eaton)AS qualifying best at Runoffs 2021: 1:50.427 (Drew Cattell)AS qualifying best at Runoffs 2022: 2:02.162 (Kurt Rezzetano)AS qualifying best at Runoffs 2023: 2:03.082 (Daniel Richardson)AS qualifying best at Runoffs 2024: 2:26.578 (Gregory Eaton)AS qualifying best at Runoffs 2025: 2:26.792 (Andrew McDermid)AS qualifying best at Runoffs 2026: 2:26.911 (Andrew McDermid)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
FAB-SpecASsolid race · dashed qualifying · slower is lower
100%110%120%130%140%19 rule changes between Runoffs 2018 and Runoffs 201919 ▾48 rule changes between Runoffs 2019 and Runoffs 202048 ▾58 rule changes between Runoffs 2020 and Runoffs 202158 ▾26 rule changes between Runoffs 2021 and Runoffs 202226 ▾32 rule changes between Runoffs 2022 and Runoffs 202332 ▾41 rule changes between Runoffs 2023 and Runoffs 202441 ▾37 rule changes between Runoffs 2024 and Runoffs 202537 ▾36 rule changes between Runoffs 2025 and Runoffs 202636 ▾FA race best at Runoffs 2015: 100.0% of FA's (Tyler Hunter)FA race best at Runoffs 2016: 100.0% of FA's (Ryan Norman)FA race best at Runoffs 2017: 100.0% of FA's (Keith Grant)FA race best at Runoffs 2018: 100.0% of FA's (Mirl Swan)FA race best at Runoffs 2019: 100.0% of FA's (Dario Cangialosi)FA race best at Runoffs 2020: 100.0% of FA's (Spencer Brockman)FA race best at Runoffs 2021: 100.0% of FA's (James French)FA race best at Runoffs 2022: 100.0% of FA's (Alex Mayer)FA race best at Runoffs 2024: 100.0% of FA's (Dudley Fleck)FA race best at Runoffs 2025: 100.0% of FA's (Hans Peter)FA race best at Runoffs 2026: 100.0% of FA's (James French)FA qualifying best at Runoffs 2015: 100.0% of FA's (Tyler Hunter)FA qualifying best at Runoffs 2016: 100.0% of FA's (Ryan Norman)FA qualifying best at Runoffs 2017: 100.0% of FA's (Sedat Yelkin)FA qualifying best at Runoffs 2018: 100.0% of FA's (Mirl Swan)FA qualifying best at Runoffs 2019: 100.0% of FA's (Dario Cangialosi)FA qualifying best at Runoffs 2020: 100.0% of FA's (Spencer Brockman)FA qualifying best at Runoffs 2021: 100.0% of FA's (James French)FA qualifying best at Runoffs 2022: 100.0% of FA's (Chip Romer)FA qualifying best at Runoffs 2024: 100.0% of FA's (Hans Peter)FA qualifying best at Runoffs 2025: 100.0% of FA's (Hans Peter)FA qualifying best at Runoffs 2026: 100.0% of FA's (Dudley Fleck)B-Spec race best at Runoffs 2015: 138.2% of FA's (John Heinricy)B-Spec race best at Runoffs 2016: 135.3% of FA's (John Heinricy)B-Spec race best at Runoffs 2017: 135.8% of FA's (David Daughtery)B-Spec race best at Runoffs 2018: 133.3% of FA's (Jake Pipal)B-Spec race best at Runoffs 2019: 137.8% of FA's (David Daughtery)B-Spec race best at Runoffs 2020: 138.6% of FA's (Riley Salyer)B-Spec race best at Runoffs 2021: 136.8% of FA's (Steve Introne)B-Spec race best at Runoffs 2022: 132.5% of FA's (Riley Salyer)B-Spec race best at Runoffs 2024: 141.1% of FA's (Rob Piekarczyk)B-Spec race best at Runoffs 2025: 141.5% of FA's (Daniel Conway)B-Spec race best at Runoffs 2026: 139.2% of FA's (Josh Schmidt)B-Spec qualifying best at Runoffs 2015: 138.6% of FA's (John Heinricy)B-Spec qualifying best at Runoffs 2016: 142.6% of FA's (David Daughtery)B-Spec qualifying best at Runoffs 2017: 136.9% of FA's (David Daughtery)B-Spec qualifying best at Runoffs 2018: 135.3% of FA's (Oscar Jackson)B-Spec qualifying best at Runoffs 2019: 140.2% of FA's (Frank Schwartz)B-Spec qualifying best at Runoffs 2020: 138.4% of FA's (David Daughtery)B-Spec qualifying best at Runoffs 2021: 137.3% of FA's (John Phillips)B-Spec qualifying best at Runoffs 2022: 136.5% of FA's (Steve Introne)B-Spec qualifying best at Runoffs 2024: 141.5% of FA's (Daniel Conway)B-Spec qualifying best at Runoffs 2025: 142.4% of FA's (Josh Schmidt)B-Spec qualifying best at Runoffs 2026: 140.4% of FA's (Josh Schmidt)AS race best at Runoffs 2015: 113.6% of FA's (Andy McDermid)AS race best at Runoffs 2016: 118.2% of FA's (Edward Hosni)AS race best at Runoffs 2017: 122.0% of FA's (Bryan Long)AS race best at Runoffs 2018: 122.7% of FA's (John Heinricy)AS race best at Runoffs 2019: 120.2% of FA's (James Jost)AS race best at Runoffs 2020: 118.4% of FA's (Gregory Eaton)AS race best at Runoffs 2021: 122.0% of FA's (Gregory Eaton)AS race best at Runoffs 2022: 114.8% of FA's (Gregory Eaton)AS race best at Runoffs 2024: 120.2% of FA's (Gregory Eaton)AS race best at Runoffs 2025: 121.7% of FA's (Gregory Eaton)AS race best at Runoffs 2026: 120.4% of FA's (Andrew McDermid)AS qualifying best at Runoffs 2015: 113.0% of FA's (Tom Sloe)AS qualifying best at Runoffs 2016: 121.0% of FA's (Tom Sloe)AS qualifying best at Runoffs 2017: 117.0% of FA's (James Jost)AS qualifying best at Runoffs 2018: 122.2% of FA's (Andrew McDermid)AS qualifying best at Runoffs 2019: 121.1% of FA's (Gregory Eaton)AS qualifying best at Runoffs 2020: 118.3% of FA's (Gregory Eaton)AS qualifying best at Runoffs 2021: 123.1% of FA's (Drew Cattell)AS qualifying best at Runoffs 2022: 116.7% of FA's (Kurt Rezzetano)AS qualifying best at Runoffs 2024: 120.6% of FA's (Gregory Eaton)AS qualifying best at Runoffs 2025: 121.4% of FA's (Andrew McDermid)AS qualifying best at Runoffs 2026: 119.9% of FA's (Andrew McDermid)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
FAB-SpecASsolid race · dashed qualifying · each class's best lap as a share of FA's at the same event (the reference class, changeable above); 100% is level, less is quicker, so up the chart is quicker
EventFAB-SpecAS
Qual best Race best Trap Qual best Race best Trap vs FA % of FA Qual best Race best Trap vs FA % of FA 
Road America Runoffs 20262026-09-282:02.513Dudley Fleck · fastest of 9 · top 5 within 6.9s+1.590s (+1.31%)2:03.334James French · fastest of 10 · top 5 within 1.4s+0.680s (+0.55%)158.6John McAleer+1.5 mph (+1.0%)2:51.987Josh 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%)+48.299squal +49.474s139.2%qual 140.4%2:26.911Andrew McDermid · fastest of 8 · top 5 within 3.4s+0.119s (+0.08%)2:28.471Andrew McDermid · fastest of 8 · top 5 within 2.4s-0.761s (-0.51%)151.0Andrew McDermid-0.6 mph (-0.4%)+25.137squal +24.398s120.4%qual 119.9%
36 rule changes (FA: 7, B-Spec: 16, AS: 13)11 weight · 6 engine · 5 induction · 5 suspension & brakes · 2 tyres & wheels · 1 removed · 6 othershowhide
  • AS 2016+ Camaro Spec Line Full Prep #39646tyres & wheels
  • AS Consideration of Pirelli P Zero Trofeo Track for AS Competition #40495tyres & wheels
  • AS Change in 9.1.6.D.4.d.5 in Suspension Mounting Points #40094other
  • AS Re-Add 4.6L 4v 96-04 Mustang Cobra #40239weight
  • AS Errors and Omissions #40532weight
  • FA Update sealed engine teardown section #40621engine
  • AS Clarification for LM7 Holley Carburetor #40167engine
  • B-Spec ECU Location in Mazda2 #40034engine
  • B-Spec Allow Cars With Combined Brake/Clutch Reservoir to Separate. #40122suspension & brakes
  • FA Motor Classification #40175weight
  • B-Spec Race Memo RM 26-01 B-Spec Mini Cooper Weight Adjustments with OEM #40070weight
  • AS Header Information Update for EFI Engine Build Sheets #39886engine
  • AS Errors and Omissions #39933weight
  • AS Re-Organization of AS Spec lines for 2026 #39887removed
  • 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
  • AS Edelbrock manifold (& timing kit) to Chevy LS Spec Lines Request #39055weight
  • B-Spec C-Spec Rear Sway Bars #39652suspension & brakes
  • FA Pro Mazda Classification and Performance Enhancement Proposal #39411induction
  • AS Restrictor Plate Change for Gen 2 Ford Coyote Engine #39501induction
  • B-Spec Notes section cleanup #39062weight
  • B-Spec 2026 BOP Recommendations #39475weight +25 lbs
  • B-Spec Expire NLA Mazda 2 Headers #39582weight
  • FA Alternate Intake Manifold for MZR #38223induction
  • FA Engine Compression Rule Change Request #39302engine
  • FA Change Formula 1000 allowances #39608induction
  • AS 1994 Mustang Spec Line Request #39104engine
  • AS Cadillac CTS-V BOP Weight Change #38640weight -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
  • FA Re-Consider USF Pro 2000 Car for Formula Atlantic Class #38783other
Road America Runoffs 20252025-09-292:00.923Hans Peter · fastest of 12 · top 5 within 2.4s-0.637s (-0.52%)2:02.654Hans Peter · fastest of 11 · top 5 within 3.1s+0.864s (+0.71%)157.0Shane Kennett-3.0 mph (-1.9%)2:52.211Josh 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%)+50.959squal +51.288s141.5%qual 142.4%2:26.792Andrew McDermid · fastest of 11 · top 5 within 3.9s+0.214s (+0.15%)2:29.232Gregory Eaton · fastest of 10 · top 5 within 4.0s+2.803s (+1.91%)151.5Andrew McDermid+1.9 mph (+1.3%)+26.578squal +25.869s121.7%qual 121.4%
37 rule changes (FA: 3, B-Spec: 23, AS: 11)7 induction · 6 engine · 6 weight · 5 suspension & brakes · 2 cars added · 2 tyres & wheels · 1 wording · 8 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
  • AS RE: Previous Letter 37695 Update #38245weight -75 lbs
  • FA Ligier JS F3 Tire Choice #38434tyres & wheels
  • AS Errors and Omissions #38234engine
  • 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
  • AS Errors and Omission #38055induction
  • AS Request to Add LS1/LS6 Intakes for 5.3L Truck Engine EnO #38197engine
  • 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
  • AS Flotek Head Plunge Cut Inconsistencies #37502other
  • AS Notes clean up #37693weight
  • 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
  • AS Race memo #37902engine
  • 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
  • FA Update Formula Renault 2.0 spec line notes #37853tyres & wheels
  • 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
  • FA Classify FR European Championship car as spec line car in Table 2 #37658cars added
  • AS Increase Coyote Engine Restrictor to 80mm #36177induction
  • AS Performance Pack for 2015+ Mustang #36867weight
  • AS Gear Ratios #37131engine
  • AS ECU specs for LS engine #37208engine
  • 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
  • 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 20242024-10-012:01.560Hans Peter · fastest of 13 · top 5 within 2.0s-2.714s (-2.18%)2:01.790Dudley Fleck · fastest of 12 · top 5 within 3.3s-2.956s (-2.37%)160.0Brandon Schwarz+9.4 mph (+6.3%)2:52.027Daniel 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%)+50.099squal +50.467s141.1%qual 141.5%2:26.578Gregory Eaton · fastest of 18 · top 5 within 2.6s-0.467s (-0.32%)2:26.429Gregory Eaton · fastest of 18 · top 5 within 2.5s-1.239s (-0.84%)149.6Gregory Eaton+0.4 mph (+0.3%)+24.639squal +25.018s120.2%qual 120.6%
41 rule changes (B-Spec: 30, AS: 11)7 cars added · 6 tyres & wheels · 5 suspension & brakes · 4 engine · 4 weight · 3 induction · 2 removed · 1 wording · 9 othershowhide
  • AS Mustang transmission ratios #36662engine
  • 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
  • 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
  • AS Request for Classification of 2018-2023 mustang In #35764cars added
  • 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
  • AS 6th gen Camaro limited prep #35733cars added
  • AS Chevrolet/Pontiac Camaro & Firebird (82-92) 5.7L V8 LS1 Alum BLK #35825cars added
  • AS Full Prep Head #35891other
  • B-Spec Delete trim levels/update language for spec lines #35746other
  • B-Spec Wheel Rules #36066tyres & wheels
  • AS Restricted Prep Aftermarket Parts Request #35682other
  • AS Allowance of 11 #35824tyres & 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
  • AS Request to Classify 1970-1981 Camaro and Firebird in AS #33659cars added
  • AS Fuel Cell 12 #34194other
  • AS Please Classify the 6th Gen Into AS. #35448cars added
  • AS spec lines #35713cars added
  • 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
  • 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
  • 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
  • B-Spec Mazda 3i 2010-2013 5-Speed Manual Gear Ratios #34820other
  • B-Spec Error Correction #34955engine
  • 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%)2:03.082Daniel Richardson · fastest of 11 · top 5 within 2.2s+0.920s (+0.75%)2:04.120Gregory Eaton · fastest of 9 · top 5 within 3.0s-0.458s (-0.37%)154.6James Jost+3.7 mph (+2.5%)
32 rule changes (FA: 7, B-Spec: 21, AS: 4)8 weight · 5 induction · 5 tyres & wheels · 4 engine · 4 suspension & brakes · 1 cars added · 5 othershowhide
  • B-Spec Initial car classifications and spec lines #34461weight
  • AS Crate Motor Part Numbers #32944engine
  • AS Request wheel size change #33007tyres & wheels
  • AS Alternative Upper Front Control Arms for Dodge Challenger #33352engine
  • AS Front Brake Caliper Adapters for Dodge Challenger #33353suspension & brakes
  • B-Spec Hyundai Accent Restrictor Plate #34331induction
  • B-Spec Hyundai Accent 2012 Model #34332other
  • 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
  • FA Simplify Pro Formula Mazda wheel allowance #34190tyres & wheels
  • B-Spec T5 Rules Feedback #33595weight
  • FA E&O - Correct Pro Formula Mazda spec line dimensional equivalent #34085tyres & wheels
  • FA Add new spec line for MSR Formula Mazda FMzR to Table 2 #34139other
  • B-Spec Early Model Mini #33363other
  • B-Spec Helper Versus Tender springs. #33866suspension & brakes
  • 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
  • FA BDA Displacement #33431engine
  • FA Reclassify 2010-2017 Formula Renault 2.0 as a spec line car in FA #33395weight
  • FA Change Swift 016 2.3L restrictor size and minimum weight #33472induction -30 lbs
  • B-Spec Utilize the Data - Make BoP Changes #32179weight -225 lbs
  • FA Pro Formula Mazda Dimension E&O #33160induction
Virginia International Raceway Runoffs 20222022-09-241:44.703Chip Romer · fastest of 7 · top 5 within 4.0s+3.158s (+3.11%)1:48.507Alex Mayer · fastest of 4 · top 4 within 4.2s+5.400s (+5.24%)154.6Austin Hill-1.4 mph (-0.9%)2:22.945Steve 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%)+35.312squal +38.242s132.5%qual 136.5%2:02.162Kurt Rezzetano · fastest of 13 · top 5 within 2.3s-0.776s (-0.63%)2:04.578Gregory Eaton · fastest of 11 · top 5 within 2.9s+0.678s (+0.55%)150.9James Jost-3.0 mph (-2.0%)+16.071squal +17.459s114.8%qual 116.7%
26 rule changes (FA: 7, B-Spec: 10, AS: 9)6 suspension & brakes · 4 engine · 3 cars added · 3 weight · 1 aero · 1 induction · 1 tyres & wheels · 3 wording · 4 othershowhide
  • AS Request to add Hoosier W2 #33031other
  • AS correction of Dodge Challenger specification line #33151wording
  • B-Spec Request new Mazda Rear Swaybar #32769suspension & brakes
  • AS Request CTS-V Spec Line Error Correction #30242weight
  • B-Spec Request to Remove Part Numbers from Kia/Hyundai Spec Lines #32378induction
  • FA Update FR Americas rulebook requirement #32491engine
  • FA Clarify verification of sealed engine compliance #32522engine
  • FA Clarify Formula Lites and FR Americas sealed engine requirement #32523engine
  • FA E&O FA Transmission section #32251tyres & wheels
  • FA E&O Swift 016 2.5 liter Aero column #32363aero
  • 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
  • FA Closing the Gap #31934other
  • 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
  • FA Reorganize Tables 1 and 2 #31985weight
  • AS Proposed Revisions to SCCA GCR 2021 Appendix M, Part 3 #30295other
  • AS specification line consolidation and correction #31846wording
  • AS correction of SMG specification line #31847suspension & brakes
  • AS Alternate cylinder heads for full prep engine builds - Evaluation #31851engine
  • B-Spec Request to add 2007-2008 Honda Fit #30853cars added
  • AS Request for adjustable Front Upper Control Arms on 4th Gen F-Body #30457other
  • AS Request Pontiac GTO tire size change #30881weight
  • B-Spec Rules Clarification of Body and Camber Plates #30814suspension & brakes
Indianapolis Motor Speedway Runoffs 20212021-09-251:29.701James French · fastest of 18 · top 5 within 2.7s-0.256s (-0.28%)1:30.650James French · fastest of 17 · top 5 within 6.1s-0.715s (-0.78%)155.5James French2:03.121John 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 Oliveira+33.321squal +33.420s136.8%qual 137.3%1:50.427Drew Cattell · fastest of 31 · top 5 within 1.9s+5.207s (+4.95%)1:50.606Gregory Eaton · fastest of 28 · top 5 within 1.7s-0.901s (-0.81%)153.8James Jost+19.956squal +20.726s122.0%qual 123.1%
58 rule changes (FA: 22, B-Spec: 22, AS: 14)14 weight · 9 engine · 6 cars added · 6 induction · 6 suspension & brakes · 3 tyres & wheels · 2 removed · 5 wording · 7 othershowhide
  • B-Spec Rules Clarification of Body and Camber Plates #30814suspension & brakes
  • FA E&O Table 2 engine names #31085engine
  • FA Move Toyota 1800 to Table 2 #30822removed
  • FA E&O Swift 016 wheel width reference #30939tyres & wheels
  • B-Spec B-Spec Mazda2 Header Update #30884weight
  • FA Update FA rules package #30717engine
  • FA Move Mazda MZR/Ford Duratec 2296cc and 2500cc to Table 2 #30718removed
  • FA Clean up Table 2 Mazda MZR 2.0L and Honda Civic K20Z3 spec lines #30719other
  • AS Request CTS-V Spec Line Error Correction #30242weight
  • AS Request to consolidate SN95 Mustang '94-'04 Mustang spec lines #30428cars added
  • AS American Sedan Transmission Rule Change Request #30595weight
  • AS Correction to specifications inadvertently deleted #30691wording
  • AS weight adjustments #30700weight +50 lbs
  • 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
  • FA E&O Mazda MZR 2.0 and Honda Civic K20Z3 chassis eligibility #30632other
  • FA Correct engine name in Swift 016 2.3 liter spec line #30447engine
  • FA Correct engine name in Swift 016 2.5 liter spec line #30448engine
  • FA Revise Table 1 Spec Lines and clarify application of Engine Notes #30456engine
  • 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
  • FA Update Table 1 Weights for Spec Lines C, I, and K #30355weight -25 lbs
  • FA Remove redundant reference in Table 2 spec line #30366weight
  • FA Correct the name of the FR Americas car #30369wording
  • FA Clean up Spec Line D in Table 1 #30372weight
  • FA Table 2 Honda K20Z3 request #30386induction
  • AS AS Mustang LP 4.6 3V Classification Transmission Request #29886weight
  • AS Request CF driveshaft on CTS-V for durability improvement #30117engine
  • AS Adjustment to model years of 5th generation RP Camaro #30348engine
  • B-Spec Spec Tire Recommendation #29480tyres & wheels
  • B-Spec Make restrictor thickness unique for B Spec #30349induction
  • FA E&O FA Intake Restrictors #30273induction
  • FA Clean up Spec Lines A and B in Table 1 #30274weight
  • FA Clean up Spec Line C in Table 1 #30275weight
  • FA Clean up Spec Lines J and L in Table 1 #30276weight
  • FA Move engine specifications to Pro Formula Mazda spec line notes #30278engine
  • FA Update F3 Americas spec line #30280other
  • 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
  • AS Request for 2015 -2017 Ford Mustang Spec Line #29514cars added
  • AS Request Trunk lid / Rear Hatch clarification #29591wording
  • AS Common Weight for CTS-V Tire #29759weight
  • AS Correction to specifications inadvertently deleted #30041cars added
  • FA Request to classify Formula Lites Crawford FL15 #29702cars added
  • AS Request Additional Engine Options for Dodge Challenger Spec Line #29543engine
  • AS Rule simplification spec line communization #29824weight
  • B-Spec Request clarification of B14 shock package for any and all cars #29483suspension & brakes
  • B-Spec Cleanup of spec lines #29495wording
Road America Runoffs 20202020-10-022:04.274Spencer Brockman · fastest of 11 · top 5 within 2.7s2:04.746Spencer Brockman · fastest of 10 · top 5 within 2.4s150.6Hans Peter2:52.033David Daughtery · fastest of 25 · top 5 within 1.9s2:52.847Riley Salyer · fastest of 25 · top 5 within 0.8s111.5Robert Iversen+48.101squal +47.759s138.6%qual 138.4%2:27.045Gregory Eaton · fastest of 18 · top 5 within 0.6s2:27.668Gregory Eaton · fastest of 15 · top 5 within 1.5s149.2Gregory Eaton+22.922squal +22.771s118.4%qual 118.3%
48 rule changes (FA: 15, B-Spec: 17, AS: 16)7 engine · 6 cars added · 6 induction · 6 weight · 4 tyres & wheels · 3 suspension & brakes · 2 aero · 1 removed · 5 wording · 8 othershowhide
  • B-Spec Allowance Versus Requirement for R56 Mini Cooper #29127induction
  • AS Dodge Challenger AS Spec Line Clarification #28698induction
  • AS Dodge Challenger AS Spec Line Clarification #2 #28699aero
  • AS Support for R-Type Specification Tires #27450tyres & wheels
  • AS Spec Tire Request #27519tyres & wheels
  • AS Restrictor Plate Change for RP 2011+ Mustang with Coyote Engine #27675induction
  • AS 2005-2009 Restricted Prep 4.6 3V #27908engine
  • AS Request for 2005-2009 Restricted Prep 4.6 3V Parts #27909engine
  • AS Request for Full Preparation Classification for 2010-2014 Camaro #28030other
  • AS Cylinder Heads #28696engine
  • AS Request for Max Rotor Diameter Change #28748suspension & brakes
  • AS Request increase rotor diameter #28797other
  • FA Request to Adjust FB Weight for Stock Engines #29005weight
  • B-Spec Request to change units on wheelbase for consistency with wording #28786wording
  • FA E&O permitted engine modifications #28831engine
  • FA E&O Transmissions #28832other
  • FA Swift 016 Gurney flap wicker clarification #28884aero
  • AS weight adjustments for 2020 season #28785weight -50 lbs
  • 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
  • FA Remove redundant spec line in Table 1 #28720removed
  • FA E&O general engine rules #28772engine
  • FA Request higher compression ratio and prior weights for F1000 cars #28162engine
  • FA Remove redundant wheel dimension provisions #28554tyres & wheels
  • FA E&O Formula 3 spec line #28596induction
  • 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
  • FA FA weight correction/clarification #28430engine
  • AS Rear Trailing Arms #28007suspension & brakes
  • AS Weight reduction for cars running iron heads #28010weight
  • AS 05-10 Mustang with HR cam classification #28226cars added
  • AS 10-15 Camaro Full Prep classification #28227cars added
  • B-Spec Request for Automatic Transmission Inclusion #27686other
  • B-Spec Request to Add Transmission Coolers to Automatics #27687wording
  • 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
  • FA Request to merge FB into FA #25611weight
  • FA Suggestions for FB/F1000 into FA #27319other
  • FA Change Swift 016 - 2.3 liter Mazda Duratec restrictor size #27880induction
  • B-Spec Request for Correction of Production Years for Mini Cooper #27226wording
  • FA Move wheel dimensions from Bodywork subsection to #27493tyres & wheels
  • FA Table 2 Mazda MZR 2.0 E&O #27640other
Virginia International Raceway Runoffs 20192019-10-051:41.545Dario Cangialosi · fastest of 8 · top 5 within 2.8s1:43.107Dario Cangialosi · fastest of 8 · top 5 within 1.8s155.9Kent Vaccaro2:22.368Frank Schwartz · fastest of 26 · top 5 within 0.8s2:22.094David Daughtery · fastest of 24 · top 5 within 0.8s112.2John Phillips+38.987squal +40.823s137.8%qual 140.2%2:02.938Gregory Eaton · fastest of 17 · top 5 within 0.8s2:03.900James Jost · fastest of 16 · top 5 within 2.1s153.9James Jost+20.793squal +21.393s120.2%qual 121.1%
19 rule changes (FA: 7, B-Spec: 8, AS: 4)4 weight · 3 cars added · 2 engine · 1 removed · 1 suspension & brakes · 4 wording · 4 othershowhide
  • AS Request to add SMG to 9.1.6.B.1 AS Intent #27140other
  • 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
  • FA Follow up to Letter #27344 on Honda Powered FA Rules #27363removed
  • FA Swift 014 Mazda MZR 2.0 E&O #27305weight
  • AS Request Ride Height Clarification #26598suspension & brakes
  • B-Spec Request to allow OBX Header for 2007-10 Mini Cooper #26977other
  • AS Request to Revert to 2017 Weights #25885weight
  • FA Adjust Line N restrictor size and minimum weight #26691weight +30 lbs
  • FA Add data plate requirement #26707other
  • B-Spec Request to add B-Spec to GCR 9.3.26 fuel cell #26132wording
  • FA Request to add FA engine spec lines #26183engine
  • AS SMG Mustang eligibility in American sedan #26224cars added
  • FA FA MZR 2.0 Engine Specification #25814engine
  • FA FA 016 weight increase #26063weight
  • 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 20182018-10-101:28.176Mirl Swan · fastest of 7 · top 5 within 4.0s1:29.924Mirl Swan · fastest of 7 · top 5 within 2.6s144.8Antony Opheim1:59.321Oscar Jackson · fastest of 14 · top 5 within 1.2s1:59.852Jake Pipal · fastest of 12 · top 5 within 1.0s101.0Frank Schwartz+29.928squal +31.145s133.3%qual 135.3%1:47.782Andrew McDermid · fastest of 12 · top 5 within 1.9s1:50.345John Heinricy · fastest of 10 · top 5 within 2.3s105.0Kevin Fandozzi+20.421squal +19.606s122.7%qual 122.2%
No rule changes on record between these events
Indianapolis Motor Speedway Runoffs 20172017-09-251:29.957Sedat Yelkin · fastest of 12 · top 5 within 2.3s1:31.365Keith Grant · fastest of 12 · top 5 within 1.0s2:03.166David Daughtery · fastest of 18 · top 5 within 2.5s2:04.050David Daughtery · fastest of 18 · top 5 within 2.3s+32.685squal +33.209s135.8%qual 136.9%1:45.220James Jost · fastest of 29 · top 5 within 6.7s1:51.507Bryan Long · fastest of 28 · top 5 within 0.9s+20.142squal +15.263s122.0%qual 117.0%
No rule changes on record between these events
Mid-Ohio Sports Car Course Runoffs 20162016-09-191:14.920Ryan Norman · fastest of 5 · top 5 within 7.0s1:19.009Ryan Norman · fastest of 5 · top 5 within 4.7s1:46.865David Daughtery · fastest of 10 · top 5 within 1.0s1:46.930John Heinricy · fastest of 9 · top 5 within 0.6s+27.921squal +31.945s135.3%qual 142.6%1:30.651Tom Sloe · fastest of 22 · top 5 within 3.6s1:33.424Edward Hosni · fastest of 20 · top 5 within 1.0s+14.415squal +15.731s118.2%qual 121.0%
No rule changes on record between these events
Daytona International Speedway Runoffs 20152015-09-211:47.758Tyler Hunter · fastest of 10 · top 5 within 3.7s1:48.162Tyler Hunter · fastest of 8 · top 5 within 5.3s2:29.366John Heinricy · fastest of 15 · top 5 within 1.2s2:29.465John Heinricy · fastest of 15 · top 5 within 0.4s+41.303squal +41.608s138.2%qual 138.6%2:01.746Tom Sloe · fastest of 22 · top 5 within 2.6s2:02.922Andy McDermid · fastest of 19 · top 5 within 2.2s+14.760squal +13.988s113.6%qual 113.0%

By track

TrackEvents Typical % of FA Best Latest 
Road America4100.0%100.0%Runoffs 2020100.0%Runoffs 2026
Virginia International Raceway3100.0%2 of 3 with FA100.0%Runoffs 2019100.0%Runoffs 2022
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 FA'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.