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BoP Lab / Classes / FF

FF vs SM vs GT2 vs FP pace at every track

Lap times across years say as much about the weather as the class. % of FF is each class's best lap as a share of FF'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-SpecEPFAFCFE2FF×vsFP×FVFXGT1vsGT2×GTXHPPP2vsSM×SMXSRF3STLSTUT1T2T3T4Show 51 inactive classes
Series
Reference · what % is measured against, 12 events
Tracks · untick to narrow

Closest to the field: FF 100.0% of FF Rick Payne, Daytona International Speedway Runoffs 2015 race · SM 97.1% of FF Elivan Goulart, Virginia International Raceway Runoffs 2019 race · GT2 80.1% of FF Andrew Aquilante, Virginia International Raceway Runoffs 2019 race · FP 91.2% of FF Eric Prill, Virginia International Raceway Runoffs 2019 race

1:402:002:202:4037 rule changes between Runoffs 2018 and Runoffs 201937 ▾51 rule changes between Runoffs 2019 and Runoffs 202051 ▾41 rule changes between Runoffs 2020 and Runoffs 202141 ▾40 rule changes between Runoffs 2021 and Runoffs 202240 ▾27 rule changes between Runoffs 2022 and Runoffs 202327 ▾40 rule changes between Runoffs 2023 and Runoffs 202440 ▾32 rule changes between Runoffs 2024 and Runoffs 202532 ▾51 rule changes between Runoffs 2025 and Runoffs 202651 ▾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)GT2 race best at Runoffs 2015: 1:53.543 (Jordan Bupp)GT2 race best at Runoffs 2016: 1:26.847 (Andrew Aquilante)GT2 race best at Runoffs 2017: 1:40.976 (Andrew Aquilante)GT2 race best at Runoffs 2018: 1:38.524 (R Spencer Trenery)GT2 race best at Runoffs 2019: 1:52.475 (Andrew Aquilante)GT2 race best at Runoffs 2020: 2:14.279 (Andrew Aquilante)GT2 race best at Runoffs 2021: 2:03.513 (Tim Kezman)GT2 race best at Runoffs 2022: 1:53.048 (Daniel Bender)GT2 race best at Runoffs 2023: 1:52.865 (Jared Odrick)GT2 race best at Runoffs 2024: 2:13.311 (John Atwell)GT2 race best at Runoffs 2025: 2:13.447 (John Atwell)GT2 race best at Runoffs 2026: 2:10.650 (John Atwell)GT2 qualifying best at Runoffs 2015: 1:53.652 (Jordan Bupp)GT2 qualifying best at Runoffs 2016: 1:25.405 (Andrew Aquilante)GT2 qualifying best at Runoffs 2017: 1:39.919 (Andrew Aquilante)GT2 qualifying best at Runoffs 2018: 1:37.203 (Andrew Aquilante)GT2 qualifying best at Runoffs 2019: 1:50.182 (Andrew Aquilante)GT2 qualifying best at Runoffs 2020: 2:12.298 (Andrew Aquilante)GT2 qualifying best at Runoffs 2021: 1:39.665 (Andrew Aquilante)GT2 qualifying best at Runoffs 2022: 1:51.086 (Andrew Aquilante)GT2 qualifying best at Runoffs 2023: 1:52.004 (Barry Boes)GT2 qualifying best at Runoffs 2024: 2:11.860 (Charlie Peter)GT2 qualifying best at Runoffs 2025: 2:11.807 (Brad McAllister)GT2 qualifying best at Runoffs 2026: 2:09.634 (John Atwell)FP race best at Runoffs 2015: 2:12.419 (Kevin Ruck)FP race best at Runoffs 2016: 1:36.399 (John Walker)FP race best at Runoffs 2017: 1:53.007 (Eric Prill)FP race best at Runoffs 2018: 1:48.481 (Joe Huffaker)FP race best at Runoffs 2019: 2:08.076 (Eric Prill)FP race best at Runoffs 2020: 2:34.033 (Kevin Ruck)FP race best at Runoffs 2021: 1:59.933 (Cliff Ira)FP race best at Runoffs 2022: 2:17.641 (Mason Workman)FP race best at Runoffs 2023: 2:07.787 (Cliff Ira)FP race best at Runoffs 2024: 2:33.246 (Kevin Ruck)FP race best at Runoffs 2025: 2:34.271 (Chris Bovis)FP race best at Runoffs 2026: 2:33.240 (David Strittmatter)FP qualifying best at Runoffs 2015: 2:11.009 (Kevin Ruck)FP qualifying best at Runoffs 2016: 1:35.938 (John Walker)FP qualifying best at Runoffs 2017: 1:52.091 (Eric Prill)FP qualifying best at Runoffs 2018: 1:47.588 (Joe Huffaker)FP qualifying best at Runoffs 2019: 2:07.436 (Eric Prill)FP qualifying best at Runoffs 2020: 2:31.414 (Ethan Shippert)FP qualifying best at Runoffs 2021: 1:51.082 (Craig Chima)FP qualifying best at Runoffs 2022: 2:06.217 (Eric Prill)FP qualifying best at Runoffs 2023: 2:08.248 (Cliff Ira)FP qualifying best at Runoffs 2024: 2:32.327 (Cliff Ira)FP qualifying best at Runoffs 2025: 2:32.395 (David Strittmatter)FP qualifying best at Runoffs 2026: 2:33.275 (Stephen Simonds)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
FFSMGT2FPsolid race · dashed qualifying · slower is lower
90%95%100%105%110%115%37 rule changes between Runoffs 2018 and Runoffs 201937 ▾51 rule changes between Runoffs 2019 and Runoffs 202051 ▾41 rule changes between Runoffs 2020 and Runoffs 202141 ▾40 rule changes between Runoffs 2021 and Runoffs 202240 ▾27 rule changes between Runoffs 2022 and Runoffs 202327 ▾40 rule changes between Runoffs 2023 and Runoffs 202440 ▾32 rule changes between Runoffs 2024 and Runoffs 202532 ▾51 rule changes between Runoffs 2025 and Runoffs 202651 ▾FF race best at Runoffs 2015: 100.0% of FF's (Rick Payne)FF race best at Runoffs 2016: 100.0% of FF's (Neil Verhagen)FF race best at Runoffs 2017: 100.0% of FF's (Jonathon Kotyk)FF race best at Runoffs 2018: 100.0% of FF's (Jonathon Kotyk)FF race best at Runoffs 2019: 100.0% of FF's (Jonathan Kotyk)FF race best at Runoffs 2020: 100.0% of FF's (Jeffrey Bartz)FF race best at Runoffs 2021: 100.0% of FF's (Jonathan Kotyk)FF race best at Runoffs 2022: 100.0% of FF's (Jonathan Kotyk)FF race best at Runoffs 2023: 100.0% of FF's (Jonathan Kotyk)FF race best at Runoffs 2024: 100.0% of FF's (Sebastian Mateo Naranjo)FF race best at Runoffs 2025: 100.0% of FF's (Calvin Kautz)FF race best at Runoffs 2026: 100.0% of FF's (Nathan Down)FF qualifying best at Runoffs 2015: 100.0% of FF's (Tim Kautz)FF qualifying best at Runoffs 2016: 100.0% of FF's (Neil Verhagen)FF qualifying best at Runoffs 2017: 100.0% of FF's (Zach Holden)FF qualifying best at Runoffs 2018: 100.0% of FF's (Jonathon Kotyk)FF qualifying best at Runoffs 2019: 100.0% of FF's (Tyler O'Connor)FF qualifying best at Runoffs 2020: 100.0% of FF's (Simon Sikes)FF qualifying best at Runoffs 2021: 100.0% of FF's (Jonathan Kotyk)FF qualifying best at Runoffs 2022: 100.0% of FF's (Jonathan Kotyk)FF qualifying best at Runoffs 2023: 100.0% of FF's (Nolan Allaer)FF qualifying best at Runoffs 2024: 100.0% of FF's (Calvin Kautz)FF qualifying best at Runoffs 2025: 100.0% of FF's (Jonathan Kotyk)FF qualifying best at Runoffs 2026: 100.0% of FF's (David Ybarra)Off the chart: SM race best at Runoffs 2015: 116.8% of FF's (Todd Lamb)SM race best at Runoffs 2016: 111.8% of FF's (Michael Carter)SM race best at Runoffs 2017: 113.9% of FF's (Michael Gagliardo)SM race best at Runoffs 2018: 113.0% of FF's (Michael Carter)SM race best at Runoffs 2019: 97.1% of FF's (Elivan Goulart)SM race best at Runoffs 2020: 113.5% of FF's (Preston Pardus)SM race best at Runoffs 2021: 102.7% of FF's (Brian Henderson)SM race best at Runoffs 2022: 100.5% of FF's (Travis Wiley)SM race best at Runoffs 2023: 113.0% of FF's (Julian DaCosta)SM race best at Runoffs 2024: 113.7% of FF's (Brett Kowalski)SM race best at Runoffs 2025: 113.0% of FF's (Kyle Greenhill)SM race best at Runoffs 2026: 113.3% of FF's (Francisco Barroso)SM qualifying best at Runoffs 2015: 113.2% of FF's (Andrew Carbonell)SM qualifying best at Runoffs 2016: 112.7% of FF's (Justin Hille)SM qualifying best at Runoffs 2017: 113.1% of FF's (Chris Haldeman)SM qualifying best at Runoffs 2018: 112.5% of FF's (Ken Sutherland)SM qualifying best at Runoffs 2019: 112.5% of FF's (Todd Buras)SM qualifying best at Runoffs 2020: 113.5% of FF's (Kyle Greenhill)SM qualifying best at Runoffs 2021: 112.8% of FF's (Brian Henderson)SM qualifying best at Runoffs 2022: 113.0% of FF's (Danny Steyn)SM qualifying best at Runoffs 2023: 113.2% of FF's (Danny Steyn)SM qualifying best at Runoffs 2024: 113.0% of FF's (Ethan Goulart)SM qualifying best at Runoffs 2025: 112.6% of FF's (Bobby Gossett)SM qualifying best at Runoffs 2026: 113.4% of FF's (Brett Kowalski)GT2 race best at Runoffs 2015: 92.0% of FF's (Jordan Bupp)GT2 race best at Runoffs 2016: 96.4% of FF's (Andrew Aquilante)GT2 race best at Runoffs 2017: 96.6% of FF's (Andrew Aquilante)GT2 race best at Runoffs 2018: 96.5% of FF's (R Spencer Trenery)Off the chart: GT2 race best at Runoffs 2019: 80.1% of FF's (Andrew Aquilante)GT2 race best at Runoffs 2020: 93.1% of FF's (Andrew Aquilante)GT2 race best at Runoffs 2021: 106.8% of FF's (Tim Kezman)Off the chart: GT2 race best at Runoffs 2022: 81.7% of FF's (Daniel Bender)GT2 race best at Runoffs 2023: 93.6% of FF's (Jared Odrick)GT2 race best at Runoffs 2024: 93.8% of FF's (John Atwell)GT2 race best at Runoffs 2025: 91.7% of FF's (John Atwell)GT2 race best at Runoffs 2026: 90.9% of FF's (John Atwell)GT2 qualifying best at Runoffs 2015: 92.8% of FF's (Jordan Bupp)GT2 qualifying best at Runoffs 2016: 95.7% of FF's (Andrew Aquilante)GT2 qualifying best at Runoffs 2017: 95.5% of FF's (Andrew Aquilante)GT2 qualifying best at Runoffs 2018: 95.7% of FF's (Andrew Aquilante)GT2 qualifying best at Runoffs 2019: 92.2% of FF's (Andrew Aquilante)GT2 qualifying best at Runoffs 2020: 92.6% of FF's (Andrew Aquilante)GT2 qualifying best at Runoffs 2021: 95.5% of FF's (Andrew Aquilante)GT2 qualifying best at Runoffs 2022: 93.2% of FF's (Andrew Aquilante)GT2 qualifying best at Runoffs 2023: 93.9% of FF's (Barry Boes)GT2 qualifying best at Runoffs 2024: 92.5% of FF's (Charlie Peter)GT2 qualifying best at Runoffs 2025: 91.0% of FF's (Brad McAllister)GT2 qualifying best at Runoffs 2026: 90.6% of FF's (John Atwell)FP race best at Runoffs 2015: 107.3% of FF's (Kevin Ruck)FP race best at Runoffs 2016: 107.0% of FF's (John Walker)FP race best at Runoffs 2017: 108.1% of FF's (Eric Prill)FP race best at Runoffs 2018: 106.3% of FF's (Joe Huffaker)FP race best at Runoffs 2019: 91.2% of FF's (Eric Prill)FP race best at Runoffs 2020: 106.8% of FF's (Kevin Ruck)FP race best at Runoffs 2021: 103.7% of FF's (Cliff Ira)FP race best at Runoffs 2022: 99.5% of FF's (Mason Workman)FP race best at Runoffs 2023: 106.0% of FF's (Cliff Ira)FP race best at Runoffs 2024: 107.9% of FF's (Kevin Ruck)FP race best at Runoffs 2025: 106.0% of FF's (Chris Bovis)FP race best at Runoffs 2026: 106.6% of FF's (David Strittmatter)FP qualifying best at Runoffs 2015: 107.0% of FF's (Kevin Ruck)FP qualifying best at Runoffs 2016: 107.5% of FF's (John Walker)FP qualifying best at Runoffs 2017: 107.2% of FF's (Eric Prill)FP qualifying best at Runoffs 2018: 105.9% of FF's (Joe Huffaker)FP qualifying best at Runoffs 2019: 106.6% of FF's (Eric Prill)FP qualifying best at Runoffs 2020: 105.9% of FF's (Ethan Shippert)FP qualifying best at Runoffs 2021: 106.4% of FF's (Craig Chima)FP qualifying best at Runoffs 2022: 105.9% of FF's (Eric Prill)FP qualifying best at Runoffs 2023: 107.5% of FF's (Cliff Ira)FP qualifying best at Runoffs 2024: 106.9% of FF's (Cliff Ira)FP qualifying best at Runoffs 2025: 105.2% of FF's (David Strittmatter)FP qualifying best at Runoffs 2026: 107.2% of FF's (Stephen Simonds)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
FFSMGT2FPsolid race · dashed qualifying · each class's best lap as a share of FF's at the same event (the reference class, changeable above); 100% is level, less is quicker, so up the chart is quicker
EventFFSMGT2FP
Qual best Race best Trap Qual best Race best Trap vs FF % of FF Qual best Race best Trap vs FF % of FF Qual best Race best Trap vs FF % of FF 
Road America Runoffs 20262026-09-282:23.047David 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%)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%)+19.039squal +19.126s113.3%qual 113.4%2:09.634John Atwell · fastest of 18 · top 5 within 4.3s-2.173s (-1.65%)2:10.650John Atwell · fastest of 18 · top 5 within 4.1s-2.797s (-2.10%)163.0Jack Stanford-0.3 mph (-0.2%)-13.036squal -13.413s90.9%qual 90.6%2:33.275Stephen Simonds · fastest of 26 · top 5 within 1.0s+0.880s (+0.58%)2:33.240David Strittmatter · fastest of 25 · top 5 within 1.7s-1.031s (-0.67%)132.4David Strittmatter±0.0 mph (±0.0%)+9.554squal +10.228s106.6%qual 107.2%
51 rule changes (FF: 2, SM: 2, GT2: 13, FP: 34)12 weight · 11 engine · 8 induction · 5 cars added · 4 tyres & wheels · 1 removed · 1 suspension & brakes · 5 wording · 4 othershowhide
  • FP Mini Cooper Compression Ratio #40517engine
  • FF Clarification in FF Kent 1600 Compression Ratio Paragraph #40293engine
  • FP 1996-2000 Honda Civic (CX, DX, VP, LX) with Engine Code D16Y7 #40322engine
  • FP 1275 Midget/Sprit Alternate intake manifold E/O #40370induction
  • FP HP Honda Civic (92-95) #40464weight -70 lbs
  • SM Rear Toe Link #40271other
  • FP Miata track width - errors and omissions #39976wording
  • FP GCR Spec Line Correction #39977induction
  • FP CGR Spec Line Weight Correction #39978weight
  • FP Triumph GT6 Spec Change. #40098induction
  • FP Request to Classify BMW E21 320i #40110cars added
  • FP BMW 318is 84-85 engine displacement correction #40116engine
  • GT2 Panoz Esperante GTS Letter ID Number: #38494 - Additional Info #38584tyres & wheels
  • GT2 Appendix L Update #39923tyres & wheels
  • GT2 GT2 Porsche 997.2 GT3 Cup EDIT #40125other
  • GT2 Corvette C7 (14-19) L76 Specline Errors/Missing Changes #39838weight -100 lbs
  • GT2 GT2 Porsche 997.2 GT3 Cup #39936weight
  • SM Part Number Change Request #39914wording
  • FP Correct Valve Sizes on FP Fiat x19 1300 and 1500 #39850engine
  • FP Dual Carburetor Adjustments #39851induction
  • GT2 Classification Request - Ginetta G56 GT4 (V8) #39625cars added
  • GT2 Remove GT3U from GCR as it is now in STU #39862removed
  • GT2 Audi R8 GT4 remove spec line notes #39864other
  • FP Request Toyota 5E Series Engines #38208engine
  • FP Request for Toyota 4E Series Engines #38209engine
  • FP Dual Carbs for the Fiat X1/9 #39593induction
  • GT2 Allow Larger Air Cooled Engines in Porsche 911 GT2 #39249engine
  • GT2 Classify T1 BMW in GT2 #39408cars added
  • FF Formula F Alternative Tire Rule Proposed Clarifications #39281tyres & wheels
  • GT2 Additional Body Options to Replace Older Stock Car Bodies #39086other
  • GT2 GT3 Turbo to GT2? #39365induction
  • GT2 Tech Bulletins for GT2 and GT2-ST #39537cars added -100 lbs
  • FP TR2 Notes E&O #39180weight
  • FP Balance of Power #39187weight +50 lbs
  • FP Competition Adjustment Request #39259weight -80 lbs
  • FP Factory Roll Bar Removal on VW Convertible #39268wording
  • FP FP Parity Request #39325weight +50 lbs
  • FP Adjust former-GTL Honda's with B/D-Series Engines #39374engine
  • FP Please Lower Weight of 280Z #38871weight -160 lbs
  • FP Miata Weight Adjustment Follow Up #38949weight -25 lbs
  • FP Weight Break for 1098 Midget / Sprite #38970weight -80 lbs
  • FP HP Volvo 142 spec omission #38994engine
  • FP HP Mini DOHC 1.6 #38996engine
  • FP 83-88 FP Scirocco Spec Line Creation #38997cars added
  • FP Add to Rabbit description #39019wording
  • FP Clean-up 9.1.5.E.7e #39025suspension & brakes
  • FP Add TB size to Ford Mustang (94-98) Spec Line #39130induction
  • FP Correct Existing VW Scirocco Spec Line #39140weight
  • FP HP Plymouth Arrow spec omission #38995wording
  • FP Add Wheel Diameter to Appendix G #39008tyres & wheels
  • FP Add TB ID tolerance to general Prod rules #39009induction
Road America Runoffs 20252025-09-292:24.905Jonathan 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%)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%)+18.889squal +18.206s113.0%qual 112.6%2:11.807Brad McAllister · fastest of 16 · top 5 within 3.4s-0.053s (-0.04%)2:13.447John Atwell · fastest of 13 · top 5 within 3.6s+0.136s (+0.10%)163.3Charlie Peter-1.0 mph (-0.6%)-12.094squal -13.098s91.7%qual 91.0%2:32.395David Strittmatter · fastest of 20 · top 5 within 2.9s+0.068s (+0.04%)2:34.271Chris Bovis · fastest of 19 · top 5 within 1.8s+1.025s (+0.67%)132.4David Strittmatter-1.1 mph (-0.8%)+8.730squal +7.490s106.0%qual 105.2%
32 rule changes (FF: 4, SM: 4, GT2: 7, FP: 17)10 weight · 5 induction · 3 aero · 3 cars added · 3 tyres & wheels · 2 engine · 1 wording · 5 othershowhide
  • GT2 Rear Deck Lid for Older Air-Cooled Porsche #38506aero
  • FP BMW Z4 update #38490induction
  • FP EP Fiat 124 Spider Competition Adjustment Request #38498weight -50 lbs
  • FP 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
  • FF Page 228, FF tire rule 9.1.1.10.e #38251tyres & wheels
  • SM Clarify Tire Marking Regs #38005tyres & wheels
  • FP Request for Classification of Chevrolet Spark #37755cars added
  • FP Request to Lower Ford Festiva Minimum Weight to 1600 LBS #37939weight -100 lbs
  • FF Formula F Proposal to Invite Older Cars Via a Tire Rule Change #37802tyres & wheels
  • FP Request Competition Adjustment to BMW Z3 2.5L #37120induction
  • FP FP Class Adjustments #37458weight
  • FP Interpretation of Production Rules on Mirrors #37235other
  • FP Weight Reduction for Honda S2000 #37466weight
  • FP Mazda 1999 Miata 1.8L #37488weight -50 lbs
  • FP Errors & Omissions #37648cars added
  • FP GTL/FP consolidation 2025 Rules #37659induction
  • GT2 Hood Bulge allowed #37000engine
  • GT2 OEM Wing Adjustment #37590aero
  • FP Effective date for Jan 2025 GCR updates #37654induction
  • GT2 GT2/ST - Remove Aftermarket/Racing ABS penalty #36538weight
  • FP Request to Reduce Weight of BMW 325i/is E30 (84-91) Spec Line #37119weight -50 lbs
  • FP Fix Error in Spridget Spec Line #37437engine
  • FP Create ruleset that allows GTL cars to run in FP #37485other
  • GT2 Panoz Esperante GTS BOP #36686cars added
  • GT2 Correct language regarding OEM Areo Devices #37137aero
  • GT2 GT2 Sunbeam Tiger Alternate Carburetor #37198induction
  • SM E&O SMX Regs 9.1.7.1.D.5.u-.w #37070other
  • FF Change FF/FC Weight with Sequential Gearbox #36651weight
  • FF Alternative Oversize Honda Fit Pistons #37064weight
  • FP 1275 HP Spridget Level 2 Only #36518other
Road America Runoffs 20242024-10-012:22.552Calvin 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%)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%)+19.429squal +18.554s113.7%qual 113.0%2:11.860Charlie Peter · fastest of 23 · top 5 within 1.1s-0.438s (-0.33%)2:13.311John Atwell · fastest of 23 · top 5 within 0.9s-0.968s (-0.72%)164.3Jonathan Start+2.1 mph (+1.3%)-8.746squal -10.692s93.8%qual 92.5%2:32.327Cliff Ira · fastest of 26 · top 5 within 2.1s+0.913s (+0.60%)2:33.246Kevin Ruck · fastest of 24 · top 5 within 1.4s-0.787s (-0.51%)133.5David Strittmatter+0.3 mph (+0.2%)+11.189squal +9.775s107.9%qual 106.9%
40 rule changes (FF: 2, SM: 4, GT2: 13, FP: 21)13 weight · 6 engine · 5 induction · 4 cars added · 1 aero · 1 suspension & brakes · 6 wording · 4 othershowhide
  • FF Update to FF EGR Blanking Plate Rule #36633engine
  • FP Errors/emissions Honda Civic/CRX #36700wording
  • SM SMX Camera Rule Correction #36496wording
  • SM AIM ECU Protocol #36556engine
  • SM OE versus OEM Definitons #36608other
  • SM Shifter Bushing #36611suspension & brakes
  • FP Errant entry in HP production line item #36231other
  • GT2 GT2-ST Rule Clarification #36093wording
  • GT2 GT4 cars may run in GT2-ST #36235weight
  • FP NIssan 300ZX Z31 to EP #35830cars added
  • FP RX7 1993 and Up Request In EP Spec Lines, classify #36031cars added
  • FP Clean-up Multiple EP RX-8 Spec Lines In EP #36156wording
  • FP Request to Replace CRX Plastic Panels #35876wording
  • FP FP data and parity #35896induction
  • GT2 Request for Spec Line 1010 Reconsideration #35009weight +300 lbs
  • GT2 Request to Eliminate the FPR from the Corvette (-2013) with LS2 #35878induction
  • FP GCR Correction - Redundant HP Spec Lines #35623engine
  • FP Update FP Protege (01-03) Model Info #35715other
  • GT2 Classify Corvette C8 (2020- ) into GT2/ST #33759cars added
  • GT2 Requesting classification for a 2015 Mitjet ST in GT2 #35408cars added
  • FP Update 1988-1991 Civic to Match 1988-1991 CRX #35399weight
  • GT2 Rear Blade Spoiler Clarification #35261aero
  • GT2 GT Direct Injection allowance and rules #35437engine
  • GT2 REDUCE C6 CORVETTE WEIGHT WITH OEM 7 LITER ENGINE REDUCE BY 150LB #35385weight -150 lbs
  • GT2 GT2/3 remove Direction Injection not allowed in Spec line notes #35439engine
  • FF Honda Fit Oversize Piston Rings #35305other
  • FP FP data #35060weight +25 lbs
  • FP Request to Review Z3 2.5 Spec Line #35073weight +50 lbs
  • FP Corrections to Honda Spec Lines in FP #35250induction
  • FP Miata Alternate Head #35253weight -50 lbs
  • FP Triumph GT6 Adjustments #35255weight
  • FP Honda S2000 throttle body #35272induction
  • FP Correction within Triumph TR8 Spec Line #35315engine
  • FP Correction to EP 924S/944 Spec Line #35317weight
  • GT2 Dodge Viper Gen 3 hybrid Kit Update Request #35200induction
  • FP Porsche 944/924S Rule Change Request #35002weight
  • FP FP and HP Toyota Corolla #35030weight -43 lbs
  • FP Triumph GT6 Adjustments #35054weight -30 lbs
  • GT2 Errors in GTCS Headings and Use of the Terms Category and ClassChange existing GTL and GTA Rules #34453weight
  • GT2 Late E & O #34966wording
Virginia International Raceway Runoffs 20232023-09-231:59.249Nolan 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%)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%)+15.646squal +15.737s113.0%qual 113.2%1:52.004Barry Boes · fastest of 15 · top 5 within 1.6s+0.918s (+0.83%)1:52.865Jared Odrick · fastest of 15 · top 5 within 1.0s-0.183s (-0.16%)164.0Tom Patton-0.2 mph (-0.1%)-7.718squal -7.245s93.6%qual 93.9%2:08.248Cliff Ira · fastest of 21 · top 5 within 1.0s+2.031s (+1.61%)2:07.787Cliff Ira · fastest of 20 · top 5 within 0.8s-9.854s (-7.16%)133.7Cliff Ira+1.1 mph (+0.9%)+7.204squal +8.999s106.0%qual 107.5%
27 rule changes (FF: 1, SM: 1, GT2: 19, FP: 6)10 induction · 5 weight · 4 cars added · 3 engine · 2 aero · 1 tyres & wheels · 2 othershowhide
  • GT2 GT2 Mazda 20B 3 rotor ENO #34765weight -220 lbs
  • FP Correct Intake Valve Size on 1500cc Midget/Spitfire #34419induction
  • FP ITC to FP? #34286other
  • GT2 appendix letter #33635 #34206weight
  • GT2 Remove Weight and Restrictor Penalty for Corvette C7 Body #34342weight
  • FP Request to Classify Sonic and Fiesta in HP #34264cars added
  • FP Classification Request for 1978 Toyota Celica #34097cars added
  • GT2 Request to class 2011 Porsche Cayman S #33771cars added
  • GT2 Please classify Fields Cardinal V8 #33784cars added
  • GT2 Adding Ginetta G56 GTA Factory ProTune for GT2 Class #33825engine
  • FF Add Fast Forward Part Numbers for Honda Fit Engine #33752engine
  • FP Request to Add Mazda Protege P5 to FP #33664other
  • GT2 GT2 Mazda 13B Turbo #33729induction
  • FP Review Limited Prep Port Matching Rules #33600induction
  • GT2 Request Permission to Use a Substitute Turbo #33337induction
  • GT2 Request to Reduce Restriction on C7 GT2 Corvette #33342induction
  • GT2 Toyota 4A-F and 4A-FE 1.6L DOHC 16V Engine Request #33415engine
  • GT2 GT2 Mazda 13b turbocharger part # update #33437induction
  • GT2 GT2-ST BMW E36/46 spec line remove #33610aero
  • GT2 GT3 Choke option effective 1-01-2023 #33669induction
  • GT2 GT3 2.0L choke/weight option #33670weight
  • GT2 BOP adjustment for GT2 & GT2-ST #33681induction
  • SM BOP for NB1 and NB2 #32309weight
  • GT2 GT2 (TA2)/GTA Part Number Update #33315induction
  • GT2 Ginetta G56 GTA - Optional Wheels #33357tyres & wheels
  • GT2 Allow the MAShaw Body Kit on the GT2/ST Spec Line for BMW E36/E46 #32447aero
  • GT2 Request for C5/C6 Corvette Restrictor Size Review #32982induction
Virginia International Raceway Runoffs 20222022-09-241:59.215Jonathan 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%)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%)+0.749squal +15.449s100.5%qual 113.0%1:51.086Andrew Aquilante · fastest of 23 · top 5 within 1.1s+0.904s (+0.82%)1:53.048Daniel Bender · fastest of 17 · top 5 within 3.1s+0.573s (+0.51%)164.2Scotty B White+1.4 mph (+0.9%)-25.310squal -8.129s81.7%qual 93.2%2:06.217Eric Prill · fastest of 18 · top 5 within 1.5s-1.219s (-0.96%)2:17.641Mason Workman · fastest of 15 · top 5 within 3.2s+9.565s (+7.47%)132.5Cliff Ira+1.2 mph (+0.9%)-0.717squal +7.002s99.5%qual 105.9%
40 rule changes (SM: 1, GT2: 14, FP: 25)12 induction · 9 cars added · 4 engine · 4 weight · 3 suspension & brakes · 2 tyres & wheels · 3 wording · 3 othershowhide
  • FP Request to classify VW New Beetle 2.5L in EP #32725cars added
  • FP Request Rotary Injection on Dual Y manifold #32775engine
  • FP Request for Corrado Stroke & Displacement Correction #32985engine
  • GT2 Tail lights on all GT category race cars. #32799suspension & brakes
  • GT2 Addendum to letter #32514 Ginetta GTA G56 #33076cars added
  • GT2 Information requested for carbon roofs on BMW E36/E46 cars in GT2 #32682wording
  • GT2 Request to Allow the 95mm S54 BMW Crankshaft in GT2-ST #32698other
  • GT2 Request to classify Audi R8 FIA GT4 to GT2 #32805cars added
  • FP Subaru BRZ Model Years #32500other
  • FP Weight Adjustment of Lotus 7 #32213weight +50 lbs
  • FP EP MX-5 Global Cup Car #32218weight
  • FP Please Class BMW 128i in EP #32370cars added
  • FP Inconsistency in Body Work Descriptions #32396other
  • FP Request to classify the 1999-2000 Mazda Protege in FP #32398cars added
  • GT2 Typo in rules for shocks #32308suspension & brakes
  • GT2 additional response to letters #31898 & 32083 #32424weight +140 lbs
  • FP Mazda RX8 with 13b Rotary #32170induction
  • FP Request Idle control valve clarification #32178engine
  • FP Correct FP BMW 325e/es Displacement #32394engine
  • SM Update GCR Section 9.1.7.3.A.1. #32217suspension & brakes
  • FP EP Adjustments #31858induction
  • FP 1999 3.8L Ford Mustang to EP? #31635weight
  • FP Improved Touring Tires #32064tyres & wheels
  • FP VW Golf Jetta 2.0L intake and exhaust size correction. #32173induction
  • GT2 Request to Classify Ginetta G40 in GT2 #31597cars added
  • GT2 2021 Supra GR GT4 #31737cars added
  • GT2 Proposed Technical Bulletin #31900induction
  • FP Throttle Body and Idle Air #31800induction
  • GT2 GT2/ST Porsche Cayman #31451 correct TBR size error #31991wording
  • FP Porsche 968 Engine Questions #31478induction
  • FP PCS E. 2. n. 4. Add Axle Shaft to Allow FWD the Same Freedom #31592tyres & wheels
  • FP BMW Z3 2.5L Spec Line #31724induction
  • FP FP Del Sol VTEC #31859induction
  • FP Standardize Level 2 Classifications in FP #31868induction
  • GT2 Restrictor Clarification for 2015 Cayman #31451induction
  • FP 944S2 Restrictor #31396induction
  • FP Classing Clarification for 1986 Toyota Corolla FX16 #31527cars added
  • FP E&O; MR2 Track #31120wording
  • GT2 Turbo Request for 13B Engine #30656induction
  • GT2 Request car classification #31032cars added
Indianapolis Motor Speedway Runoffs 20212021-09-251:44.359Jonathan 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 Sheppard1:57.695Brian 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+3.161squal +13.336s102.7%qual 112.8%1:39.665Andrew Aquilante · fastest of 22 · top 5 within 1.8s-0.254s (-0.25%)2:03.513Tim Kezman · fastest of 18 · top 5 within 9.6s+22.537s (+22.32%)163.7Jonathan Start+7.837squal -4.694s106.8%qual 95.5%1:51.082Craig Chima · fastest of 39 · top 5 within 1.2s-1.009s (-0.90%)1:59.933Cliff Ira · fastest of 33 · top 5 within 5.4s+6.926s (+6.13%)131.8Cliff Ira+4.257squal +6.723s103.7%qual 106.4%
41 rule changes (FF: 3, SM: 1, GT2: 16, FP: 21)13 weight · 10 engine · 9 cars added · 2 suspension & brakes · 1 induction · 1 tyres & wheels · 2 wording · 3 othershowhide
  • GT2 Correct letter 30565 GT2/ST #31088weight
  • FP Request to Allow F22c Engine for 2000-2003 Honda S2000 #30548engine
  • FP Request a review of the S14 240SX in EP. #30873weight -200 lbs
  • GT2 Request the 04-06 Pontiac GTO WC Car Be Added to the GT2/ST Chart #30339cars added
  • GT2 Request to Update GTA Obsolete Part Numbers #30615wording
  • GT2 GTX class correction to GT2/ST #30973cars added
  • FP Lotus/Caterham 7 America Request #30392engine
  • FP Request to classify ITC Plymouth Arrow #30588cars added
  • FP Reclassification of the 1984/85 BMW 318i from FP to HP #30661cars added
  • FP Fiat x1/9 Competition Adjustments #30711weight -50 lbs
  • FP Reclassify Daimler SP 250 #30721cars added
  • GT2 Porsche Cayman Engine Modification and Engine Request #30472engine
  • GT2 Request weight clarification Viper CC #30565weight
  • GT2 Variance, 2021 TA2 Rules vs GCR Appendix L #30641weight
  • FP Move Porsche 924 in Level 1 Prep From EP to FP #30135cars added
  • FP Clarify Application of Percentage Based Weight Penalties #30669weight
  • FP Change Classification of 84-87 Mazda 626 from FP to HP #30350cars added
  • FP Fiat X1/9 brake rotors #30423suspension & brakes
  • FF Kent crankshaft clarification #30426wording
  • FP Please Classify Mazda3 in FP #30165cars added
  • FP Golf MkIII Valve Size Request #30268engine
  • GT2 GT2 tiger firing order #30421engine
  • SM Updates - Obsolete Parts & BOP Parts #30438other
  • GT2 GT2-ST CORVETTE CHANGES #30029weight +100 lbs
  • GT2 Request underfloor clarification #30121tyres & wheels
  • GT2 29742 Change new wording to read as: #30329engine
  • GT2 ABS Restrictions #30064other
  • GT2 RM 21-01 C6 & C7 clarification #30192weight
  • FP Alternate Front Brake Rotors and Calipers for EP AH 3000 #29893suspension & brakes
  • FP Request VW weight break #29963weight -50 lbs
  • GT2 Request change to engine firing order rule #29742engine
  • GT2 Request E-46 BMW M3 balance of performance #29833weight -100 lbs
  • FF Allow Optional Coolant Bleed Line to Correct a Known Problem #29673engine
  • FF Clarification regarding Honda LC1 ECU implementation date #29684engine
  • FP Mk2 VW Consistency and Cleanup of FP and HP Spec Lines #29195weight -50 lbs
  • FP Correct Wording for Level 1 and Level 2 Induction Systems #29406induction
  • FP Weight Reduction for Datsun Roadster #29409weight -75 lbs
  • FP EP TR8 Adjustment #29512weight -100 lbs
  • FP Request to Classify 1996-2000 Honda Civic EX #29515cars added
  • FP FAJS Carburetor #29576other
  • GT2 Request for Bigger Engine in Plymouth Breeze #29380engine
Road America Runoffs 20202020-10-022:22.916Simon Sikes · fastest of 14 · top 5 within 1.6s2:24.268Jeffrey Bartz · fastest of 14 · top 5 within 0.4s138.1Jeffrey Bartz2:42.209Kyle Greenhill · fastest of 77 · top 5 within 0.5s2:43.748Preston Pardus · fastest of 75 · top 5 within 1.0s121.3Kyle Greenhill+19.480squal +19.293s113.5%qual 113.5%2:12.298Andrew Aquilante · fastest of 20 · top 5 within 2.9s2:14.279Andrew Aquilante · fastest of 19 · top 5 within 2.4s162.2Scotty B White-9.989squal -10.618s93.1%qual 92.6%2:31.414Ethan Shippert · fastest of 23 · top 5 within 2.2s2:34.033Kevin Ruck · fastest of 21 · top 5 within 2.3s133.2Sam Henry+9.765squal +8.498s106.8%qual 105.9%
51 rule changes (FF: 4, SM: 2, GT2: 26, FP: 19)11 engine · 10 weight · 8 induction · 7 cars added · 4 aero · 2 tyres & wheels · 1 suspension & brakes · 4 wording · 4 othershowhide
  • FP 84-87 Toyota Corolla HP Wheel Diameter Allowance Proposal E&O #29458tyres & wheels
  • GT2 rescind GT2 stock car bodies removal #29219other
  • GT2 E&O Typos in Appendix L #29447wording
  • GT2 GT2 wing width wording correction #29469aero
  • SM Radiator E&O Clarifications #29294engine
  • GT2 GT Category Wording #29193induction
  • GT2 Corvette GT2-ST intake manifold #29221induction
  • GT2 997.2 E&O link to 27915 #29373other
  • FF Clarification regarding Honda LC1 ECU implementation #29135engine
  • FP EP BMW Z3 Rule Clarification #28998engine
  • GT2 Request for allowance Trans Am SGT #28951weight
  • GT2 Omitted GT2 fender/hood openings #29171other
  • SM Modifications to prevent failures of Rear Brake Caliper Pin #28953suspension & brakes
  • FP Request to Classify Porsche 911 2.0L #28456cars added
  • FP Request to change to Carburetor Spec Line 84-87 Mazda 626 #28926induction
  • GT2 TA2 Gurney flap wicker clarification #28874aero
  • GT2 STO Gurney flap wicker clarification #28883aero
  • GT2 GT Gurney flap wicker clarification #28909aero
  • FP BMW Cylinder Head Casting and Part Numbers #28708engine
  • FP Correct Scirocco Spec line E&O #28892weight
  • GT2 Request to Adjust Weight of OEM 8.4 Viper #28739weight -50 lbs
  • GT2 Request to Adjust Weight of OEM Chevrolet Corvette #28896weight -50 lbs
  • FP Request to Classify 1990-1994 Mazda Protege #28381cars added
  • FP Error in Mini Cooper Spec Line #28713wording
  • GT2 Request Corvette engine parity #28576engine
  • FF E&O FF Kent Engine alternator language #28204engine
  • FP Caterham 7 Spec Line #28498engine
  • FP Request to classify SOHC 1989-90 240SX in F prod L2 #28553cars added
  • GT2 Request to revisit Panoz GT-S BoP #28280engine
  • GT2 GT2-ST Corvette LS2 & L76 #28583weight
  • GT2 GT2-ST Corvette L76 #28584weight
  • FF Honda Racing HPD low cost ECU proposal #27563engine
  • FF Update rain tire designation #28443tyres & wheels
  • FP VW Weight and Valve Size Request #27886weight
  • FP Request to allow 40 DCOE carb for the Datsun 510 #28195induction
  • FP Request to classify Porsche 914 2L in LPrep FProd #28231cars added
  • FP Request Ford Fiesta Weight Adjustment #28336weight
  • GT2 Request 991.2 Porsche engine displacement verify typo #28194engine
  • FP Request for Help for Datsun 1200 #27934induction
  • GT2 Windshield Clips #27323other
  • GT2 Request to Add Chevrolet SS Body to Appendix L #27898wording
  • FP Request to List Mazda Miata Throttle Body Size #27907induction
  • FP Request to Classify 2001-2003 Mazda Protege ES in FP #27922cars added
  • GT2 Request Factory Five Daytona coupe classification #26308cars added
  • GT2 Porsche 991.2 GT3 Cup GT2 Classification #27701cars added
  • GT2 Request for Acura NSX Spec Line Changes #27755weight
  • GT2 GT2 991.1 restrictor size change #27914induction
  • GT2 GT2 996/997.1 weight change #27915weight -100 lbs
  • GT2 GT2/ST Corvette comp adjustment #27920induction
  • FP Request to Correct Track of 1988-91 Honda Civic #27487wording
  • FP Re-organize Prep2 Cylinder Head Rules for Clarity & Consistency #27661engine
Virginia International Raceway Runoffs 20192019-10-051:59.563Tyler O'Connor · fastest of 14 · top 5 within 1.4s2:20.474Jonathan Kotyk · fastest of 14 · top 5 within 6.3s136.2Derek Ketchie2:14.552Todd Buras · fastest of 60 · top 5 within 0.2s2:16.459Elivan Goulart · fastest of 56 · top 5 within 0.4s119.8Jim Drago-4.015squal +14.989s97.1%qual 112.5%1:50.182Andrew Aquilante · fastest of 24 · top 5 within 4.5s1:52.475Andrew Aquilante · fastest of 19 · top 5 within 3.3s162.8Tom Patton-27.999squal -9.381s80.1%qual 92.2%2:07.436Eric Prill · fastest of 19 · top 5 within 0.6s2:08.076Eric Prill · fastest of 18 · top 5 within 0.8s131.4Ken Kannard-12.398squal +7.873s91.2%qual 106.6%
37 rule changes (FF: 3, SM: 4, GT2: 21, FP: 9)9 weight · 8 cars added · 7 engine · 3 induction · 2 suspension & brakes · 2 tyres & wheels · 3 wording · 3 othershowhide
  • FP Request bodywork for Austin Healey Bugeye Sprite MK1 #27106other
  • FP Request to classify the GMX5 2019 #27263cars added
  • FP level one susp. component rule #27270suspension & brakes
  • FP Clarification of Carb Rules - Prep 1 #27300induction
  • FP Clarification of Carb Rules - Prep 2 #27301induction
  • FP Request Miata Eligibility - 2003 #27121other
  • GT2 TA2 Weight Clarification #27077weight
  • GT2 Request to classify Toyota Supra with 3SGTE engine #25185cars added
  • GT2 Request to Classify Acura NSX from T1 to GT2? #26121cars added
  • GT2 Request for TA2 BOP in GT2 #26509weight
  • GT2 Request for e36/e46 bmw 4500 cc v8 at 2950lbs in GT2/ST #26106engine
  • GT2 Request GTX Fuel injection for previous GT-1 tube frame cars #26141engine
  • GT2 Request to Classify Ligier JS2 R #26535cars added
  • FP Rollcenter Correction Clarification #25873tyres & wheels
  • FP Hardtops #26476wording
  • GT2 Request Ford Perfomance 5.2L crate engine FPR clarification #26159engine
  • GT2 Request Ride Height Clarification #26600suspension & brakes
  • FP Request Classification of Dodge Daytona in F Production #26259weight -150 lbs
  • GT2 Request Porsche Cayman year classification #26241other
  • GT2 GT2/ST Porsche Cayman engine #26250engine
  • 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
  • GT2 ST/GT2 BMW Flossman Kit Clarification #22138wording
  • GT2 Request Clarification/Revision of Appendix L (2013 TA2 Rules) #25110weight
  • GT2 Request to classify BMW E82 (1 series) into GT2 #25539cars added
  • GT2 2010 Cayman Street Tuner Into an STO Car,Addendum #25545weight
  • GT2 Request - Classify Ford Performance 5.2l #25716cars added
  • GT2 Add missing displacement, minimum weight. Remove #25765weight
  • GT2 Request for Ford FP 350s Weight Reduction #25806weight
  • GT2 Request to Classify EcoBoost Mustang #25842cars added
  • GT2 Request to Remove Mazda RX 7 Body Work Penalty #26024weight
  • GT2 GTX Homologation table update #26034cars added
Sonoma Raceway Runoffs 20182018-10-101:41.612Jonathon Kotyk · fastest of 22 · top 5 within 1.7s1:42.049Jonathon Kotyk · fastest of 22 · top 5 within 1.3s115.7Denny Renfrow1:54.355Ken Sutherland · fastest of 48 · top 5 within 0.7s1:55.278Michael Carter · fastest of 48 · top 5 within 0.3s102.2Danny Steyn+13.229squal +12.743s113.0%qual 112.5%1:37.203Andrew Aquilante · fastest of 22 · top 5 within 2.1s1:38.524R Spencer Trenery · fastest of 19 · top 5 within 1.3s133.8Michael McAleenan-3.525squal -4.409s96.5%qual 95.7%1:47.588Joe Huffaker · fastest of 15 · top 5 within 3.0s1:48.481Joe Huffaker · fastest of 14 · top 5 within 2.2s109.1Joe Huffaker+6.432squal +5.976s106.3%qual 105.9%
No rule changes on record between these events
Indianapolis Motor Speedway Runoffs 20172017-09-251:44.601Zach Holden · fastest of 36 · top 5 within 1.2s1:44.524Jonathon Kotyk · fastest of 36 · top 5 within 0.5s1:58.306Chris Haldeman · fastest of 86 · top 5 within 0.5s1:59.100Michael Gagliardo · fastest of 83 · top 5 within 0.6s+14.576squal +13.705s113.9%qual 113.1%1:39.919Andrew Aquilante · fastest of 36 · top 5 within 2.9s1:40.976Andrew Aquilante · fastest of 35 · top 5 within 2.6s-3.548squal -4.682s96.6%qual 95.5%1:52.091Eric Prill · fastest of 42 · top 5 within 1.2s1:53.007Eric Prill · fastest of 40 · top 5 within 0.7s+8.483squal +7.490s108.1%qual 107.2%
No rule changes on record between these events
Mid-Ohio Sports Car Course Runoffs 20162016-09-191:29.213Neil Verhagen · fastest of 14 · top 5 within 2.1s1:30.133Neil Verhagen · fastest of 14 · top 5 within 1.4s1:40.514Justin Hille · fastest of 45 · top 5 within 0.3s1:40.764Michael Carter · fastest of 44 · top 5 within 0.3s+10.631squal +11.301s111.8%qual 112.7%1:25.405Andrew Aquilante · fastest of 21 · top 5 within 2.8s1:26.847Andrew Aquilante · fastest of 19 · top 5 within 1.5s-3.286squal -3.808s96.4%qual 95.7%1:35.938John Walker · fastest of 33 · top 5 within 0.4s1:36.399John Walker · fastest of 27 · top 5 within 0.3s+6.266squal +6.725s107.0%qual 107.5%
No rule changes on record between these events
Daytona International Speedway Runoffs 20152015-09-212:02.489Tim Kautz · fastest of 25 · top 5 within 1.1s2:03.383Rick Payne · fastest of 22 · top 5 within 0.8s2:18.661Andrew Carbonell · fastest of 62 · top 5 within 0.6s2:24.067Todd Lamb · fastest of 59 · top 5 within 0.8s+20.684squal +16.172s116.8%qual 113.2%1:53.652Jordan Bupp · fastest of 27 · top 5 within 1.2s1:53.543Jordan Bupp · fastest of 22 · top 5 within 1.7s-9.840squal -8.837s92.0%qual 92.8%2:11.009Kevin Ruck · fastest of 20 · top 5 within 1.6s2:12.419Kevin Ruck · fastest of 18 · top 5 within 1.1s+9.036squal +8.520s107.3%qual 107.0%

By track

TrackEvents Typical % of FF 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 FF'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.