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BoP Lab / Classes / FF

FF vs FB vs F5 vs FC 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-SpecEPvsF5×FAvsFB×vsFC×FE2FF×FPFVFXGT1GT2GTXHPPP2SMSMXSRF3STLSTUT1T2T3T4Show 49 inactive classes
Series
Reference · what % is measured against
Tracks · untick to narrow

Closest to the field: FF 100.0% of FF Rick Payne, Daytona International Speedway Runoffs 2015 race · FB 87.2% of FF J R Osborne, Sonoma Raceway Runoffs 2018 qualifying · F5 83.7% of FF Wiley Mcmahan, Virginia International Raceway Runoffs 2019 race · FC 79.9% of FF Robert Allaer, Virginia International Raceway Runoffs 2019 race

1:201:402:002:206 rule changes between Runoffs 2018 and Runoffs 20196 ▾14 rule changes between Runoffs 2019 and Runoffs 202014 ▾7 rule changes between Runoffs 2020 and Runoffs 20217 ▾11 rule changes between Runoffs 2021 and Runoffs 202211 ▾4 rule changes between Runoffs 2022 and Runoffs 20234 ▾4 rule changes between Runoffs 2023 and Runoffs 20244 ▾6 rule changes between Runoffs 2024 and Runoffs 20256 ▾4 rule changes between Runoffs 2025 and Runoffs 20264 ▾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)FB race best at Runoffs 2015: 1:51.616 (J R Osborne)FB race best at Runoffs 2016: 1:21.015 (Jeremy Hill)FB race best at Runoffs 2017: 1:33.702 (Alex Mayer)FB race best at Runoffs 2018: 1:31.189 (J R Osborne)FB race best at Runoffs 2019: 1:57.688 (Pete Frost)FB qualifying best at Runoffs 2015: 1:50.711 (J R Osborne)FB qualifying best at Runoffs 2016: 1:19.886 (Alex Mayer)FB qualifying best at Runoffs 2017: 1:33.746 (Gary Hickman)FB qualifying best at Runoffs 2018: 1:28.612 (J R Osborne)FB qualifying best at Runoffs 2019: 1:54.469 (Pete Frost)F5 race best at Runoffs 2015: 2:03.298 (Matthew Strand)F5 race best at Runoffs 2016: 1:29.853 (Steven Thompson)F5 race best at Runoffs 2017: 1:42.860 (Wiley Clinton McMahan)F5 race best at Runoffs 2018: 1:42.491 (David Lapham)F5 race best at Runoffs 2019: 1:57.572 (Wiley Mcmahan)F5 race best at Runoffs 2020: 2:21.391 (James Weida)F5 race best at Runoffs 2021: 1:43.140 (Sven de Vries)F5 race best at Runoffs 2022: 2:21.862 (Sven de Vries)F5 qualifying best at Runoffs 2015: 2:01.824 (W. Clint McMahan)F5 qualifying best at Runoffs 2016: 1:28.528 (Calvin Stewart)F5 qualifying best at Runoffs 2017: 1:43.136 (Wiley Clinton McMahan)F5 qualifying best at Runoffs 2018: 1:41.807 (Jeff Jorgenson)F5 qualifying best at Runoffs 2019: 1:57.361 (Wiley Mcmahan)F5 qualifying best at Runoffs 2020: 2:20.954 (Calvin Stewart)F5 qualifying best at Runoffs 2021: 1:42.619 (Ryan Mayfield)F5 qualifying best at Runoffs 2022: 1:57.689 (James Weida)FC race best at Runoffs 2015: 1:55.135 (Yufeng Luo)FC race best at Runoffs 2016: 1:22.049 (Nigel Saurino)FC race best at Runoffs 2017: 1:36.890 (Tim Minor)FC race best at Runoffs 2018: 1:34.053 (Mitch Egner)FC race best at Runoffs 2019: 1:52.174 (Robert Allaer)FC race best at Runoffs 2020: 2:13.608 (Robert Allaer)FC race best at Runoffs 2021: 1:36.980 (Simon Sikes)FC race best at Runoffs 2022: 2:07.859 (Nolan Allaer)FC race best at Runoffs 2023: 1:51.169 (Nolan Allaer)FC race best at Runoffs 2024: 2:11.534 (Michael Varacins)FC race best at Runoffs 2025: 2:12.824 (Brandon Dixon)FC race best at Runoffs 2026: 2:11.389 (Brandon Dixon)FC qualifying best at Runoffs 2015: 1:54.477 (Yufeng Luo)FC qualifying best at Runoffs 2016: 1:21.962 (John LaRue)FC qualifying best at Runoffs 2017: 1:36.336 (Austin McCusker)FC qualifying best at Runoffs 2018: 1:32.571 (Timothy de Silva)FC qualifying best at Runoffs 2019: 1:51.200 (Robert Allaer)FC qualifying best at Runoffs 2020: 2:12.644 (Robert Allaer)FC qualifying best at Runoffs 2021: 1:36.787 (Trent Walko)FC qualifying best at Runoffs 2022: 1:49.895 (Nolan Allaer)FC qualifying best at Runoffs 2023: 1:50.281 (Nolan Allaer)FC qualifying best at Runoffs 2024: 2:11.626 (Timothy Minor)FC qualifying best at Runoffs 2025: 2:11.259 (Brandon Dixon)FC qualifying best at Runoffs 2026: 2:10.686 (Brandon Dixon)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
FFFBF5FCsolid race · dashed qualifying · slower is lower
85%90%95%100%6 rule changes between Runoffs 2018 and Runoffs 20196 ▾14 rule changes between Runoffs 2019 and Runoffs 202014 ▾7 rule changes between Runoffs 2020 and Runoffs 20217 ▾11 rule changes between Runoffs 2021 and Runoffs 202211 ▾4 rule changes between Runoffs 2022 and Runoffs 20234 ▾4 rule changes between Runoffs 2023 and Runoffs 20244 ▾6 rule changes between Runoffs 2024 and Runoffs 20256 ▾4 rule changes between Runoffs 2025 and Runoffs 20264 ▾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)FB race best at Runoffs 2015: 90.5% of FF's (J R Osborne)FB race best at Runoffs 2016: 89.9% of FF's (Jeremy Hill)FB race best at Runoffs 2017: 89.6% of FF's (Alex Mayer)FB race best at Runoffs 2018: 89.4% of FF's (J R Osborne)FB race best at Runoffs 2019: 83.8% of FF's (Pete Frost)FB qualifying best at Runoffs 2015: 90.4% of FF's (J R Osborne)FB qualifying best at Runoffs 2016: 89.5% of FF's (Alex Mayer)FB qualifying best at Runoffs 2017: 89.6% of FF's (Gary Hickman)FB qualifying best at Runoffs 2018: 87.2% of FF's (J R Osborne)FB qualifying best at Runoffs 2019: 95.7% of FF's (Pete Frost)F5 race best at Runoffs 2015: 99.9% of FF's (Matthew Strand)F5 race best at Runoffs 2016: 99.7% of FF's (Steven Thompson)F5 race best at Runoffs 2017: 98.4% of FF's (Wiley Clinton McMahan)F5 race best at Runoffs 2018: 100.4% of FF's (David Lapham)F5 race best at Runoffs 2019: 83.7% of FF's (Wiley Mcmahan)F5 race best at Runoffs 2020: 98.0% of FF's (James Weida)F5 race best at Runoffs 2021: 89.2% of FF's (Sven de Vries)Off the chart: F5 race best at Runoffs 2022: 102.5% of FF's (Sven de Vries)F5 qualifying best at Runoffs 2015: 99.5% of FF's (W. Clint McMahan)F5 qualifying best at Runoffs 2016: 99.2% of FF's (Calvin Stewart)F5 qualifying best at Runoffs 2017: 98.6% of FF's (Wiley Clinton McMahan)F5 qualifying best at Runoffs 2018: 100.2% of FF's (Jeff Jorgenson)F5 qualifying best at Runoffs 2019: 98.2% of FF's (Wiley Mcmahan)F5 qualifying best at Runoffs 2020: 98.6% of FF's (Calvin Stewart)F5 qualifying best at Runoffs 2021: 98.3% of FF's (Ryan Mayfield)F5 qualifying best at Runoffs 2022: 98.7% of FF's (James Weida)FC race best at Runoffs 2015: 93.3% of FF's (Yufeng Luo)FC race best at Runoffs 2016: 91.0% of FF's (Nigel Saurino)FC race best at Runoffs 2017: 92.7% of FF's (Tim Minor)FC race best at Runoffs 2018: 92.2% of FF's (Mitch Egner)Off the chart: FC race best at Runoffs 2019: 79.9% of FF's (Robert Allaer)FC race best at Runoffs 2020: 92.6% of FF's (Robert Allaer)FC race best at Runoffs 2021: 83.8% of FF's (Simon Sikes)FC race best at Runoffs 2022: 92.4% of FF's (Nolan Allaer)FC race best at Runoffs 2023: 92.2% of FF's (Nolan Allaer)FC race best at Runoffs 2024: 92.6% of FF's (Michael Varacins)FC race best at Runoffs 2025: 91.3% of FF's (Brandon Dixon)FC race best at Runoffs 2026: 91.4% of FF's (Brandon Dixon)FC qualifying best at Runoffs 2015: 93.5% of FF's (Yufeng Luo)FC qualifying best at Runoffs 2016: 91.9% of FF's (John LaRue)FC qualifying best at Runoffs 2017: 92.1% of FF's (Austin McCusker)FC qualifying best at Runoffs 2018: 91.1% of FF's (Timothy de Silva)FC qualifying best at Runoffs 2019: 93.0% of FF's (Robert Allaer)FC qualifying best at Runoffs 2020: 92.8% of FF's (Robert Allaer)FC qualifying best at Runoffs 2021: 92.7% of FF's (Trent Walko)FC qualifying best at Runoffs 2022: 92.2% of FF's (Nolan Allaer)FC qualifying best at Runoffs 2023: 92.5% of FF's (Nolan Allaer)FC qualifying best at Runoffs 2024: 92.3% of FF's (Timothy Minor)FC qualifying best at Runoffs 2025: 90.6% of FF's (Brandon Dixon)FC qualifying best at Runoffs 2026: 91.4% of FF's (Brandon Dixon)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
FFFBF5FCsolid 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
EventFFFBF5FC
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%)2:10.686Brandon Dixon · fastest of 10 · top 5 within 4.0s-0.573s (-0.44%)2:11.389Brandon Dixon · fastest of 10 · top 5 within 2.7s-1.435s (-1.08%)143.3Dean Kiriluk-1.8 mph (-1.2%)-12.297squal -12.361s91.4%qual 91.4%
4 rule changes (FF: 2, FC: 2)1 engine · 1 tyres & wheels · 1 weight · 1 othershowhide
  • FF Clarification in FF Kent 1600 Compression Ratio Paragraph #40293engine
  • FC F2000 MZR Spec Line Clarity/Revision Requested #38927other
  • FC Adjust F2000 Metrik ZF2 weight #39612weight -20 lbs
  • FF Formula F Alternative Tire Rule Proposed Clarifications #39281tyres & wheels
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%)2:11.259Brandon Dixon · fastest of 10 · top 5 within 2.7s-0.367s (-0.28%)2:12.824Brandon Dixon · fastest of 9 · top 5 within 2.3s+1.290s (+0.98%)145.1Brandon Dixon+0.9 mph (+0.6%)-12.717squal -13.646s91.3%qual 90.6%
6 rule changes (FF: 4, FC: 2)3 tyres & wheels · 3 weightshowhide
  • FF Page 228, FF tire rule 9.1.1.10.e #38251tyres & wheels
  • FF Formula F Proposal to Invite Older Cars Via a Tire Rule Change #37802tyres & wheels
  • FC 9.1.1.10.h. FC Tire Rule #36533tyres & wheels
  • FC Change FF/FC Weight with Sequential Gearbox #36651weight
  • FF Change FF/FC Weight with Sequential Gearbox #36651weight
  • FF Alternative Oversize Honda Fit Pistons #37064weight
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%)2:11.626Timothy Minor · fastest of 10 · top 5 within 1.3s-1.018s (-0.77%)2:11.534Michael Varacins · fastest of 9 · top 5 within 1.8s-2.074s (-1.55%)144.2Michael Varacins+1.8 mph (+1.2%)-10.523squal -10.926s92.6%qual 92.3%
4 rule changes (FF: 2, FC: 2)2 weight · 1 engine · 1 othershowhide
  • FF Update to FF EGR Blanking Plate Rule #36633engine
  • FC Four Pot Calipers #35481weight
  • FC Please correct omitted punctuation #34890weight
  • FF Honda Fit Oversize Piston Rings #35305other
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%)1:50.281Nolan Allaer · fastest of 11 · top 5 within 2.3s+0.386s (+0.35%)1:51.169Nolan Allaer · fastest of 11 · top 5 within 2.5s-16.690s (-13.05%)143.5Robert Allaer+2.3 mph (+1.7%)-9.414squal -8.968s92.2%qual 92.5%
4 rule changes (FF: 1, FC: 3)2 engine · 1 tyres & wheels · 1 weightshowhide
  • FC Review FC Runoffs Tire Marking Rule #34274tyres & wheels
  • FC USF2000 Van Diemen with Mazda MZR LF-DE 2.0L in FC #34329weight
  • FF Add Fast Forward Part Numbers for Honda Fit Engine #33752engine
  • FC E&O 9.1.1.B.16.j #33634engine
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%)1:57.689James Weida · fastest of 11 · top 5 within 3.9s+0.328s (+0.28%)2:21.862Sven de Vries · fastest of 10 · top 5 within 14.3s+24.290s (+20.66%)142.9Calvin Stewart+0.1 mph (+0.1%)+3.504squal -1.526s102.5%qual 98.7%1:49.895Nolan Allaer · fastest of 12 · top 5 within 1.5s-1.305s (-1.17%)2:07.859Nolan Allaer · fastest of 13 · top 5 within 3.8s+15.685s (+13.98%)141.2Tim Minor-0.6 mph (-0.4%)-10.499squal -9.320s92.4%qual 92.2%
11 rule changes (F5: 6, FC: 5)5 engine · 2 induction · 1 tyres & wheels · 1 wording · 2 othershowhide
  • F5 Intake Boots Correction #33028induction
  • F5 Ensure availability of ECU for Rotax engines #32695engine
  • F5 Clarify stepped exhaust header references #32743engine
  • FC Add Specification to Performance Electronics ECU for Ford Zetec #32761engine
  • F5 593 carb boot availability and oil pump clarification #32527induction
  • F5 E&O class name #32194other
  • F5 Data Box Mounting Plate #31638other
  • FC Clean up Chassis/Frame section #31867engine
  • FC Clarify Zetec ECU requirements #31554engine
  • FC Clarify composite anti-intrusion panel language #31426wording
  • FC Clarify tire marking requirements #31455tyres & wheels
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 Sheppard1:42.619Ryan Mayfield · fastest of 22 · top 5 within 1.6s-0.517s (-0.50%)1:43.140Sven de Vries · fastest of 20 · top 5 within 1.7s+0.280s (+0.27%)144.4James Weida-12.536squal -1.740s89.2%qual 98.3%1:36.787Trent Walko · fastest of 31 · top 5 within 1.7s+0.451s (+0.47%)1:36.980Simon Sikes · fastest of 31 · top 5 within 2.0s+0.090s (+0.09%)141.6Tim Minor-18.696squal -7.572s83.8%qual 92.7%
7 rule changes (FF: 3, F5: 3, FC: 1)3 engine · 1 tyres & wheels · 1 weight · 2 wordingshowhide
  • F5 Clarify allowable assisted shifting systems #30871wording
  • F5 Request to correct terminology #30976tyres & wheels
  • F5 Request to Allow Rotax 593 HO Engine #30712engine
  • FF Kent crankshaft clarification #30426wording
  • FC Request for FC Weight Change #30171weight
  • FF Allow Optional Coolant Bleed Line to Correct a Known Problem #29673engine
  • FF Clarification regarding Honda LC1 ECU implementation date #29684engine
Road America Runoffs 20202020-10-022:22.916Simon Sikes · fastest of 14 · top 5 within 1.6s2:24.268Jeffrey Bartz · fastest of 14 · top 5 within 0.4s138.1Jeffrey Bartz2:20.954Calvin Stewart · fastest of 16 · top 5 within 1.8s2:21.391James Weida · fastest of 14 · top 5 within 1.5s143.2Aaron Ellis-2.877squal -1.962s98.0%qual 98.6%2:12.644Robert Allaer · fastest of 13 · top 5 within 2.1s2:13.608Robert Allaer · fastest of 11 · top 5 within 1.2s142.4Robert Allaer-10.660squal -10.272s92.6%qual 92.8%
14 rule changes (FF: 4, F5: 6, FC: 4)7 engine · 2 induction · 1 tyres & wheels · 1 weight · 3 othershowhide
  • F5 Request to Update Suzuki Engine Years for F500 #29453engine
  • FC Urgent: SCCA PE3 map unsuitable #29475induction
  • FC Request for weight adjustments to equalize FC competition. #28888weight
  • FF Clarification regarding Honda LC1 ECU implementation #29135engine
  • F5 Request for Cockpit Adjustment of External Jetting Devices #28359other
  • F5 Two Stroke Motors (reply to #28359 WDYT) #28816engine
  • F5 Re letter requesting driver adjustable carb mixture #28840other
  • F5 #28359 WDYT Request for Cockpit Adjustment #28875other
  • FF E&O FF Kent Engine alternator language #28204engine
  • FF Honda Racing HPD low cost ECU proposal #27563engine
  • FF Update rain tire designation #28443tyres & wheels
  • F5 Change 600cc restrictor size #27883induction
  • FC Request for Better Zetec Connecting Rods #27710engine
  • FC Add Alternate Piston #27795engine
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 Ketchie1:54.469Pete Frost · only car1:57.688Pete Frost · only car145.9Pete Frost-22.786squal -5.094s83.8%qual 95.7%1:57.361Wiley Mcmahan · fastest of 15 · top 5 within 3.8s1:57.572Wiley Mcmahan · fastest of 15 · top 5 within 4.0s142.8Eric McRee-22.902squal -2.202s83.7%qual 98.2%1:51.200Robert Allaer · fastest of 10 · top 5 within 3.1s1:52.174Robert Allaer · fastest of 9 · top 5 within 2.7s141.8Robert Allaer-28.300squal -8.363s79.9%qual 93.0%
6 rule changes (FF: 3, F5: 1, FC: 2)3 weight · 2 engine · 1 inductionshowhide
  • F5 Request for Weight Increase for Motorcycle Powered Cars #27214weight +25 lbs
  • FC E&O Wiseco piston and Crower connecting rod #26659weight
  • FF Request for Oversize Honda Fit Pistons #25810engine
  • FF Heat Shield - Fit Intake #26102induction
  • FF Request catch cans/tanks clarification #26158engine
  • FC Correct Wiseco piston and connecting rod #25809weight
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 Renfrow1:28.612J R Osborne · fastest of 7 · top 5 within 3.3s1:31.189J R Osborne · fastest of 7 · top 5 within 3.7s140.5J R Osborne-10.860squal -13.000s89.4%qual 87.2%1:41.807Jeff Jorgenson · fastest of 5 · top 5 within 6.6s1:42.491David Lapham · fastest of 5 · top 5 within 9.5s113.3David Lapham+0.442squal +0.195s100.4%qual 100.2%1:32.571Timothy de Silva · fastest of 16 · top 5 within 1.8s1:34.053Mitch Egner · fastest of 12 · top 5 within 1.6s133.1Robert Armington-7.996squal -9.041s92.2%qual 91.1%
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 0.5s1:33.746Gary Hickman · fastest of 18 · top 5 within 3.3s1:33.702Alex Mayer · fastest of 17 · top 5 within 3.0s-10.822squal -10.855s89.6%qual 89.6%1:43.136Wiley Clinton McMahan · fastest of 38 · top 5 within 1.4s1:42.860Wiley Clinton McMahan · fastest of 37 · top 5 within 1.6s-1.664squal -1.465s98.4%qual 98.6%1:36.336Austin McCusker · fastest of 14 · top 5 within 2.3s1:36.890Tim Minor · fastest of 14 · top 5 within 3.8s-7.634squal -8.265s92.7%qual 92.1%
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 1.4s1:19.886Alex Mayer · fastest of 10 · top 5 within 1.5s1:21.015Jeremy Hill · fastest of 10 · top 5 within 1.2s-9.118squal -9.327s89.9%qual 89.5%1:28.528Calvin Stewart · fastest of 14 · top 5 within 3.9s1:29.853Steven Thompson · fastest of 12 · top 5 within 4.5s-0.280squal -0.685s99.7%qual 99.2%1:21.962John LaRue · fastest of 7 · top 5 within 2.6s1:22.049Nigel Saurino · fastest of 7 · top 5 within 3.0s-8.084squal -7.251s91.0%qual 91.9%
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 0.8s1:50.711J R Osborne · fastest of 20 · top 5 within 1.1s1:51.616J R Osborne · fastest of 19 · top 5 within 2.1s-11.767squal -11.778s90.5%qual 90.4%2:01.824W. Clint McMahan · fastest of 16 · top 5 within 3.0s2:03.298Matthew Strand · fastest of 15 · top 5 within 4.9s-0.085squal -0.665s99.9%qual 99.5%1:54.477Yufeng Luo · fastest of 11 · top 5 within 2.5s1:55.135Yufeng Luo · fastest of 10 · top 5 within 2.1s-8.248squal -8.012s93.3%qual 93.5%

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.