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BoP Lab / Classes / P1

P1 vs FB vs FF vs SM pace at every track

Lap times across years say as much about the weather as the class. % of P1 is each class's best lap as a share of P1'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-SpecEPFAvsFB×FCFE2vsFF×FPFVFXGT1GT2GTXHPPP1×P2vsSM×SMXSRF3STLSTUT1T2T3T4Show 49 inactive classes
Series
Reference · what % is measured against
Tracks · untick to narrow

Closest to the field: P1 100.0% of P1 Gianpaolo Ciancimino, Daytona International Speedway Runoffs 2015 race · FB 101.0% of P1 J R Osborne, Sonoma Raceway Runoffs 2018 qualifying · FF 112.1% of P1 Tim Kautz, Daytona International Speedway Runoffs 2015 qualifying · SM 121.9% of P1 Travis Wiley, Virginia International Raceway Runoffs 2022 race

1:201:402:002:202:4021 rule changes between Runoffs 2018 and Runoffs 201921 ▾10 rule changes between Runoffs 2019 and Runoffs 202010 ▾15 rule changes between Runoffs 2020 and Runoffs 202115 ▾4 rule changes between Runoffs 2021 and Runoffs 20224 ▾9 rule changes between Runoffs 2022 and Runoffs 20239 ▾12 rule changes between Runoffs 2023 and Runoffs 202412 ▾8 rule changes between Runoffs 2024 and Runoffs 20258 ▾4 rule changes between Runoffs 2025 and Runoffs 20264 ▾P1 race best at Runoffs 2015: 1:49.792 (Gianpaolo Ciancimino)P1 race best at Runoffs 2016: 1:19.407 (Gianpaolo Ciancimino)P1 race best at Runoffs 2017: 1:31.499 (Jim Devenport)P1 race best at Runoffs 2018: 1:28.786 (Perry Richardson)P1 race best at Runoffs 2019: 1:43.498 (Todd Slusher)P1 race best at Runoffs 2020: 2:01.870 (James French)P1 race best at Runoffs 2021: 1:29.225 (Lee Alexander)P1 race best at Runoffs 2022: 1:54.095 (John Mcaleer)P1 race best at Runoffs 2023: 1:44.329 (Todd Vanacore)P1 race best at Runoffs 2024: 2:00.418 (Matt Romer)P1 qualifying best at Runoffs 2015: 1:49.219 (Jim Downing)P1 qualifying best at Runoffs 2016: 1:17.308 (James Devenport)P1 qualifying best at Runoffs 2017: 1:30.794 (Jim Devenport)P1 qualifying best at Runoffs 2018: 1:27.714 (Todd Slusher)P1 qualifying best at Runoffs 2019: 1:42.674 (Todd Slusher)P1 qualifying best at Runoffs 2020: 2:01.101 (James French)P1 qualifying best at Runoffs 2021: 1:29.011 (Lee Alexander)P1 qualifying best at Runoffs 2022: 1:41.601 (Todd Slusher)P1 qualifying best at Runoffs 2023: 1:42.602 (Todd Vanacore)P1 qualifying best at Runoffs 2024: 2:00.476 (Chip Romer)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)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)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
P1FBFFSMsolid race · dashed qualifying · slower is lower
100%110%120%130%21 rule changes between Runoffs 2018 and Runoffs 201921 ▾10 rule changes between Runoffs 2019 and Runoffs 202010 ▾15 rule changes between Runoffs 2020 and Runoffs 202115 ▾4 rule changes between Runoffs 2021 and Runoffs 20224 ▾9 rule changes between Runoffs 2022 and Runoffs 20239 ▾12 rule changes between Runoffs 2023 and Runoffs 202412 ▾8 rule changes between Runoffs 2024 and Runoffs 20258 ▾4 rule changes between Runoffs 2025 and Runoffs 20264 ▾P1 race best at Runoffs 2015: 100.0% of P1's (Gianpaolo Ciancimino)P1 race best at Runoffs 2016: 100.0% of P1's (Gianpaolo Ciancimino)P1 race best at Runoffs 2017: 100.0% of P1's (Jim Devenport)P1 race best at Runoffs 2018: 100.0% of P1's (Perry Richardson)P1 race best at Runoffs 2019: 100.0% of P1's (Todd Slusher)P1 race best at Runoffs 2020: 100.0% of P1's (James French)P1 race best at Runoffs 2021: 100.0% of P1's (Lee Alexander)P1 race best at Runoffs 2022: 100.0% of P1's (John Mcaleer)P1 race best at Runoffs 2023: 100.0% of P1's (Todd Vanacore)P1 race best at Runoffs 2024: 100.0% of P1's (Matt Romer)P1 qualifying best at Runoffs 2015: 100.0% of P1's (Jim Downing)P1 qualifying best at Runoffs 2016: 100.0% of P1's (James Devenport)P1 qualifying best at Runoffs 2017: 100.0% of P1's (Jim Devenport)P1 qualifying best at Runoffs 2018: 100.0% of P1's (Todd Slusher)P1 qualifying best at Runoffs 2019: 100.0% of P1's (Todd Slusher)P1 qualifying best at Runoffs 2020: 100.0% of P1's (James French)P1 qualifying best at Runoffs 2021: 100.0% of P1's (Lee Alexander)P1 qualifying best at Runoffs 2022: 100.0% of P1's (Todd Slusher)P1 qualifying best at Runoffs 2023: 100.0% of P1's (Todd Vanacore)P1 qualifying best at Runoffs 2024: 100.0% of P1's (Chip Romer)FB race best at Runoffs 2015: 101.7% of P1's (J R Osborne)FB race best at Runoffs 2016: 102.0% of P1's (Jeremy Hill)FB race best at Runoffs 2017: 102.4% of P1's (Alex Mayer)FB race best at Runoffs 2018: 102.7% of P1's (J R Osborne)FB race best at Runoffs 2019: 113.7% of P1's (Pete Frost)FB qualifying best at Runoffs 2015: 101.4% of P1's (J R Osborne)FB qualifying best at Runoffs 2016: 103.3% of P1's (Alex Mayer)FB qualifying best at Runoffs 2017: 103.3% of P1's (Gary Hickman)FB qualifying best at Runoffs 2018: 101.0% of P1's (J R Osborne)FB qualifying best at Runoffs 2019: 111.5% of P1's (Pete Frost)FF race best at Runoffs 2015: 112.4% of P1's (Rick Payne)FF race best at Runoffs 2016: 113.5% of P1's (Neil Verhagen)FF race best at Runoffs 2017: 114.2% of P1's (Jonathon Kotyk)FF race best at Runoffs 2018: 114.9% of P1's (Jonathon Kotyk)FF race best at Runoffs 2019: 135.7% of P1's (Jonathan Kotyk)FF race best at Runoffs 2020: 118.4% of P1's (Jeffrey Bartz)FF race best at Runoffs 2021: 129.6% of P1's (Jonathan Kotyk)FF race best at Runoffs 2022: 121.3% of P1's (Jonathan Kotyk)FF race best at Runoffs 2023: 115.6% of P1's (Jonathan Kotyk)FF race best at Runoffs 2024: 118.0% of P1's (Sebastian Mateo Naranjo)FF qualifying best at Runoffs 2015: 112.1% of P1's (Tim Kautz)FF qualifying best at Runoffs 2016: 115.4% of P1's (Neil Verhagen)FF qualifying best at Runoffs 2017: 115.2% of P1's (Zach Holden)FF qualifying best at Runoffs 2018: 115.8% of P1's (Jonathon Kotyk)FF qualifying best at Runoffs 2019: 116.4% of P1's (Tyler O'Connor)FF qualifying best at Runoffs 2020: 118.0% of P1's (Simon Sikes)FF qualifying best at Runoffs 2021: 117.2% of P1's (Jonathan Kotyk)FF qualifying best at Runoffs 2022: 117.3% of P1's (Jonathan Kotyk)FF qualifying best at Runoffs 2023: 116.2% of P1's (Nolan Allaer)FF qualifying best at Runoffs 2024: 118.3% of P1's (Calvin Kautz)SM race best at Runoffs 2015: 131.2% of P1's (Todd Lamb)SM race best at Runoffs 2016: 126.9% of P1's (Michael Carter)SM race best at Runoffs 2017: 130.2% of P1's (Michael Gagliardo)SM race best at Runoffs 2018: 129.8% of P1's (Michael Carter)SM race best at Runoffs 2019: 131.8% of P1's (Elivan Goulart)SM race best at Runoffs 2020: 134.4% of P1's (Preston Pardus)SM race best at Runoffs 2021: 133.2% of P1's (Brian Henderson)SM race best at Runoffs 2022: 121.9% of P1's (Travis Wiley)SM race best at Runoffs 2023: 130.6% of P1's (Julian DaCosta)SM race best at Runoffs 2024: 134.1% of P1's (Brett Kowalski)SM qualifying best at Runoffs 2015: 127.0% of P1's (Andrew Carbonell)SM qualifying best at Runoffs 2016: 130.0% of P1's (Justin Hille)SM qualifying best at Runoffs 2017: 130.3% of P1's (Chris Haldeman)SM qualifying best at Runoffs 2018: 130.4% of P1's (Ken Sutherland)SM qualifying best at Runoffs 2019: 131.0% of P1's (Todd Buras)SM qualifying best at Runoffs 2020: 133.9% of P1's (Kyle Greenhill)SM qualifying best at Runoffs 2021: 132.2% of P1's (Brian Henderson)SM qualifying best at Runoffs 2022: 132.5% of P1's (Danny Steyn)SM qualifying best at Runoffs 2023: 131.6% of P1's (Danny Steyn)SM qualifying best at Runoffs 2024: 133.7% of P1's (Ethan Goulart)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
P1FBFFSMsolid race · dashed qualifying · each class's best lap as a share of P1's at the same event (the reference class, changeable above); 100% is level, less is quicker, so up the chart is quicker
EventP1FBFFSM
Qual best Race best Trap Qual best Race best Trap vs P1 % of P1 Qual best Race best Trap vs P1 % of P1 Qual best Race best Trap vs P1 % of P1 
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%)
4 rule changes (FF: 2, SM: 2)1 engine · 1 tyres & wheels · 1 wording · 1 othershowhide
  • FF Clarification in FF Kent 1600 Compression Ratio Paragraph #40293engine
  • SM Rear Toe Link #40271other
  • SM Part Number Change Request #39914wording
  • 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%)2:43.111Bobby 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%)
8 rule changes (FF: 4, SM: 4)3 tyres & wheels · 2 weight · 1 wording · 2 othershowhide
  • 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
  • FF Formula F Proposal to Invite Older Cars Via a Tire Rule Change #37802tyres & wheels
  • 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
Road America Runoffs 20242024-10-012:00.476Chip Romer · fastest of 12 · top 5 within 1.5s-0.625s (-0.52%)2:00.418Matt Romer · fastest of 9 · top 5 within 2.1s-1.452s (-1.19%)168.3Jason Miller+8.7 mph (+5.4%)2:22.552Calvin Kautz · fastest of 13 · top 5 within 1.1s-0.364s (-0.25%)2:22.057Sebastian Mateo Naranjo · fastest of 13 · top 5 within 0.6s-2.211s (-1.53%)140.7Calvin Kautz+2.6 mph (+1.9%)+21.639squal +22.076s118.0%qual 118.3%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%)+41.068squal +40.630s134.1%qual 133.7%
12 rule changes (P1: 6, FF: 2, SM: 4)4 engine · 2 induction · 2 weight · 1 suspension & brakes · 1 wording · 2 othershowhide
  • FF Update to FF EGR Blanking Plate Rule #36633engine
  • SM SMX Camera Rule Correction #36496wording
  • SM AIM ECU Protocol #36556engine
  • SM OE versus OEM Definitons #36608other
  • SM Shifter Bushing #36611suspension & brakes
  • P1 Update GCR section 9.1.8.B.J.7 #35907engine
  • P1 Remove redundant effective date language in GCR 9.1.8.B.J.4 #35693induction
  • P1 Correct engine series terminology #35694engine
  • FF Honda Fit Oversize Piston Rings #35305other
  • P1 Please correct omitted punctuation #34890weight
  • P1 Adjust restrictors and weights for Engine Table lines H and I #35229induction
  • P1 Revise Group CN Honda K20A-FD2 Spec Line #35337weight
Virginia International Raceway Runoffs 20232023-09-231:42.602Todd Vanacore · fastest of 10 · top 5 within 0.9s+1.001s (+0.99%)1:44.329Todd Vanacore · fastest of 9 · top 5 within 0.7s-9.766s (-8.56%)158.5Jason Miller+1.2 mph (+0.8%)1:59.249Nolan Allaer · fastest of 8 · top 5 within 2.8s+0.034s (+0.03%)2:00.583Jonathan Kotyk · fastest of 8 · top 5 within 0.4s-17.775s (-12.85%)138.4Calvin Kautz+0.1 mph (+0.1%)+16.254squal +16.647s115.6%qual 116.2%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%)+31.900squal +32.384s130.6%qual 131.6%
9 rule changes (P1: 7, FF: 1, SM: 1)3 induction · 2 aero · 2 tyres & wheels · 1 engine · 1 weightshowhide
  • P1 SIR Testing #34354induction
  • P1 E&O Single Inlet Restrictor abbreviation, etc. #34369induction
  • P1 E&O Clean up ducted air provision #34410tyres & wheels
  • P1 E&O - Correct dimensional equivalents #34018tyres & wheels
  • FF Add Fast Forward Part Numbers for Honda Fit Engine #33752engine
  • P1 November 2022 Rules Clarification for Suspension Covers #33615aero
  • SM BOP for NB1 and NB2 #32309weight
  • P1 Clarify body panel coverage of suspension components #33318aero
  • P1 E&O clarification regarding forced induction #33123induction
Virginia International Raceway Runoffs 20222022-09-241:41.601Todd Slusher · fastest of 9 · top 5 within 2.3s-1.073s (-1.05%)1:54.095John Mcaleer · fastest of 9 · top 5 within 1.4s+10.597s (+10.24%)157.2Jason Miller+1.3 mph (+0.8%)1:59.215Jonathan Kotyk · fastest of 13 · top 5 within 1.2s-0.348s (-0.29%)2:18.358Jonathan Kotyk · fastest of 12 · top 5 within 2.4s-2.116s (-1.51%)138.3Tim Kautz+2.2 mph (+1.6%)+24.263squal +17.614s121.3%qual 117.3%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%)+25.012squal +33.063s121.9%qual 132.5%
4 rule changes (P1: 3, SM: 1)1 induction · 1 suspension & brakes · 1 tyres & wheels · 1 weightshowhide
  • P1 Clarify authorization to use flat plate intake restrictor #32964induction
  • P1 E&O Clarification of Bodywork Rules #32468tyres & wheels
  • SM Update GCR Section 9.1.7.3.A.1. #32217suspension & brakes
  • P1 Displacement & Weight Change Request for 2-Cycle 6 Cylinder #31609weight
Indianapolis Motor Speedway Runoffs 20212021-09-251:29.011Lee Alexander · fastest of 13 · top 5 within 2.5s-1.783s (-1.96%)1:29.225Lee Alexander · fastest of 12 · top 5 within 3.5s-2.274s (-2.49%)160.1Jason Miller1:44.359Jonathan Kotyk · fastest of 24 · top 5 within 1.1s-0.242s (-0.23%)1:55.676Jonathan Kotyk · fastest of 23 · top 5 within 1.8s+11.152s (+10.67%)141.6Nicholas Sheppard+26.451squal +15.348s129.6%qual 117.2%1:57.695Brian Henderson · fastest of 90 · top 5 within 0.5s-0.611s (-0.52%)1:58.837Brian Henderson · fastest of 88 · top 5 within 0.3s-0.263s (-0.22%)119.8Kyle Greenhill+29.612squal +28.684s133.2%qual 132.2%
15 rule changes (P1: 11, FF: 3, SM: 1)7 engine · 4 weight · 1 induction · 1 wording · 2 othershowhide
  • P1 Move 2000cc and 2300cc engine options to individual spec lines #31012engine
  • P1 E&O Spec Line B notes #31095weight
  • P1 Add 1355cc spec line #30890weight
  • P1 E&O tonneau cover provision in cockpit opening section #30458other
  • P1 Update Spec Line B Notes #30498weight
  • P1 Update Spec Lines C and G notes #30499weight
  • P1 E&O Maximum Valves Per Cylinder #30559engine
  • FF Kent crankshaft clarification #30426wording
  • P1 Clean up Spec Line A notes section #30424engine
  • P1 Clean up Spec Line H notes section #30425engine
  • SM Updates - Obsolete Parts & BOP Parts #30438other
  • P1 DP02 Sealed 2ltr Engine Option #30038engine
  • P1 E&O restrictor terminology #30285induction
  • FF Allow Optional Coolant Bleed Line to Correct a Known Problem #29673engine
  • FF Clarification regarding Honda LC1 ECU implementation date #29684engine
Road America Runoffs 20202020-10-022:01.101James French · fastest of 18 · top 5 within 1.1s2:01.870James French · fastest of 17 · top 5 within 1.8s159.7David Locke2:22.916Simon Sikes · fastest of 14 · top 5 within 1.6s2:24.268Jeffrey Bartz · fastest of 14 · top 5 within 0.4s138.1Jeffrey Bartz+22.398squal +21.815s118.4%qual 118.0%2:42.209Kyle Greenhill · fastest of 77 · top 5 within 0.5s2:43.748Preston Pardus · fastest of 75 · top 5 within 1.0s121.3Kyle Greenhill+41.878squal +41.108s134.4%qual 133.9%
10 rule changes (P1: 4, FF: 4, SM: 2)4 engine · 2 induction · 2 weight · 1 suspension & brakes · 1 tyres & wheelsshowhide
  • SM Radiator E&O Clarifications #29294engine
  • FF Clarification regarding Honda LC1 ECU implementation #29135engine
  • SM Modifications to prevent failures of Rear Brake Caliper Pin #28953suspension & brakes
  • P1 E&O minimum weights and intake manifolds #28731induction
  • 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
  • P1 Extend date for removing sealed DP02-spec 2.0L option #28046weight
  • P1 Remove sealed DP02-spec 2.0 MZR spec #26753induction
  • P1 Update Revised Spec Line F #27745weight
Virginia International Raceway Runoffs 20192019-10-051:42.674Todd Slusher · fastest of 14 · top 5 within 1.5s1:43.498Todd Slusher · fastest of 13 · top 5 within 1.0s155.9Jim Devenport1:54.469Pete Frost · only car1:57.688Pete Frost · only car145.9Pete Frost+14.190squal +11.795s113.7%qual 111.5%1:59.563Tyler O'Connor · fastest of 14 · top 5 within 1.4s2:20.474Jonathan Kotyk · fastest of 14 · top 5 within 6.3s136.2Derek Ketchie+36.976squal +16.889s135.7%qual 116.4%2:14.552Todd Buras · fastest of 60 · top 5 within 0.2s2:16.459Elivan Goulart · fastest of 56 · top 5 within 0.4s119.8Jim Drago+32.961squal +31.878s131.8%qual 131.0%
21 rule changes (P1: 14, FF: 3, SM: 4)8 engine · 4 induction · 2 tyres & wheels · 1 removed · 1 weight · 3 wording · 2 othershowhide
  • P1 E&O Transmissions #27098other
  • P1 E&O Transmissions #27005tyres & wheels
  • P1 Move minimum height provision to #27031removed
  • P1 Remove duplicative fender louver provision #27033induction
  • P1 Missing word E&O #26919other
  • P1 E&O correction to GCR 9.1.8.C.C. #26927wording
  • P1 Clean up reference to engine table #26648engine
  • P1 Remove redundant spec line #26692engine
  • P1 Clean Up Engine Table Language #26590engine
  • P1 Move single-seat closed cockpit provision to #26376wording
  • 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
  • P1 Correct errors in GCR section 9.1.8.C.J #26144engine
  • 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
  • P1 Remove redundant inlet restrictor provisions #25877induction
  • P1 Clarify Honda K20A-FD2 parts requirement #25949engine
  • P1 Correct GCR section 9.1.8.C.J errors #25966induction
Sonoma Raceway Runoffs 20182018-10-101:27.714Todd Slusher · fastest of 19 · top 5 within 2.1s1:28.786Perry Richardson · fastest of 19 · top 5 within 0.9s144.0Johnnie Crean1:28.612J 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+2.403squal +0.898s102.7%qual 101.0%1:41.612Jonathon Kotyk · fastest of 22 · top 5 within 1.7s1:42.049Jonathon Kotyk · fastest of 22 · top 5 within 1.3s115.7Denny Renfrow+13.263squal +13.898s114.9%qual 115.8%1:54.355Ken Sutherland · fastest of 48 · top 5 within 0.7s1:55.278Michael Carter · fastest of 48 · top 5 within 0.3s102.2Danny Steyn+26.492squal +26.641s129.8%qual 130.4%
No rule changes on record between these events
Indianapolis Motor Speedway Runoffs 20172017-09-251:30.794Jim Devenport · fastest of 19 · top 5 within 2.8s1:31.499Jim Devenport · fastest of 16 · top 5 within 2.2s1:33.746Gary Hickman · fastest of 18 · top 5 within 3.3s1:33.702Alex Mayer · fastest of 17 · top 5 within 3.0s+2.203squal +2.952s102.4%qual 103.3%1:44.601Zach Holden · fastest of 36 · top 5 within 1.2s1:44.524Jonathon Kotyk · fastest of 36 · top 5 within 0.5s+13.025squal +13.807s114.2%qual 115.2%1:58.306Chris Haldeman · fastest of 86 · top 5 within 0.5s1:59.100Michael Gagliardo · fastest of 83 · top 5 within 0.6s+27.601squal +27.512s130.2%qual 130.3%
No rule changes on record between these events
Mid-Ohio Sports Car Course Runoffs 20162016-09-191:17.308James Devenport · fastest of 14 · top 5 within 2.7s1:19.407Gianpaolo Ciancimino · fastest of 13 · top 5 within 1.8s1:19.886Alex Mayer · fastest of 10 · top 5 within 1.5s1:21.015Jeremy Hill · fastest of 10 · top 5 within 1.2s+1.608squal +2.578s102.0%qual 103.3%1:29.213Neil Verhagen · fastest of 14 · top 5 within 2.1s1:30.133Neil Verhagen · fastest of 14 · top 5 within 1.4s+10.726squal +11.905s113.5%qual 115.4%1:40.514Justin Hille · fastest of 45 · top 5 within 0.3s1:40.764Michael Carter · fastest of 44 · top 5 within 0.3s+21.357squal +23.206s126.9%qual 130.0%
No rule changes on record between these events
Daytona International Speedway Runoffs 20152015-09-211:49.219Jim Downing · fastest of 9 · top 5 within 2.2s1:49.792Gianpaolo Ciancimino · fastest of 10 · top 5 within 1.7s1:50.711J R Osborne · fastest of 20 · top 5 within 1.1s1:51.616J R Osborne · fastest of 19 · top 5 within 2.1s+1.824squal +1.492s101.7%qual 101.4%2:02.489Tim Kautz · fastest of 25 · top 5 within 1.1s2:03.383Rick Payne · fastest of 22 · top 5 within 0.8s+13.591squal +13.270s112.4%qual 112.1%2:18.661Andrew Carbonell · fastest of 62 · top 5 within 0.6s2:24.067Todd Lamb · fastest of 59 · top 5 within 0.8s+34.275squal +29.442s131.2%qual 127.0%

By track

TrackEvents Typical % of P1 Best Latest 
Road America4100.0%2 of 4 with P1100.0%Runoffs 2020100.0%Runoffs 2024
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 P1'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.