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BoP Lab / Classes / FC

FC vs P2 vs FB vs SM pace at every track

Lap times across years say as much about the weather as the class. % of FC is each class's best lap as a share of FC'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×FC×FE2FFFPFVFXGT1GT2GTXHPPvsP2×vsSM×SMXSRF3STLSTUT1T2T3T4Show 50 inactive classes
Series
Reference · what % is measured against
Tracks · untick to narrow

Closest to the field: FC 100.0% of FC Yufeng Luo, Daytona International Speedway Runoffs 2015 race · P2 95.3% of FC Jeff Shafer, Indianapolis Motor Speedway Runoffs 2017 qualifying · FB 95.7% of FC J R Osborne, Sonoma Raceway Runoffs 2018 qualifying · SM 108.8% of FC Travis Wiley, Virginia International Raceway Runoffs 2022 race

1:201:402:002:202:4015 rule changes between Runoffs 2018 and Runoffs 201915 ▾12 rule changes between Runoffs 2019 and Runoffs 202012 ▾10 rule changes between Runoffs 2020 and Runoffs 202110 ▾16 rule changes between Runoffs 2021 and Runoffs 202216 ▾12 rule changes between Runoffs 2022 and Runoffs 202312 ▾11 rule changes between Runoffs 2023 and Runoffs 202411 ▾7 rule changes between Runoffs 2024 and Runoffs 20257 ▾4 rule changes between Runoffs 2025 and Runoffs 20264 ▾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)P2 race best at Runoffs 2015: 1:52.355 (Jeff Shafer)P2 race best at Runoffs 2016: 1:20.904 (Jeff Shafer)P2 race best at Runoffs 2017: 1:32.481 (Jeff Shafer)P2 race best at Runoffs 2018: 1:32.071 (Chuck Bona)P2 race best at Runoffs 2019: 1:50.258 (Greg Gyann)P2 race best at Runoffs 2020: 2:09.793 (Robert Iversen)P2 race best at Runoffs 2021: 1:35.322 (Tim Day Jr)P2 race best at Runoffs 2022: 2:15.834 (Greg Gyann)P2 race best at Runoffs 2023: 1:48.829 (Lucian Pancea)P2 race best at Runoffs 2024: 2:08.322 (Bart Wolf)P2 race best at Runoffs 2026: 2:09.441 (Mike Reupert)P2 qualifying best at Runoffs 2015: 1:51.825 (Chris Farrell)P2 qualifying best at Runoffs 2016: 1:20.188 (Jeff Shafer)P2 qualifying best at Runoffs 2017: 1:31.826 (Jeff Shafer)P2 qualifying best at Runoffs 2018: 1:28.784 (Tim Day Jr)P2 qualifying best at Runoffs 2019: 1:49.111 (Robert Iversen)P2 qualifying best at Runoffs 2020: 2:08.514 (Robert Iversen)P2 qualifying best at Runoffs 2021: 1:33.235 (Tim Day Jr)P2 qualifying best at Runoffs 2022: 1:47.566 (Tim Day Jr)P2 qualifying best at Runoffs 2023: 1:48.590 (Greg Gyann)P2 qualifying best at Runoffs 2024: 2:07.405 (Bart Wolf)P2 qualifying best at Runoffs 2026: 2:10.606 (Greg Gyann)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)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
FCP2FBSMsolid race · dashed qualifying · slower is lower
100%110%120%15 rule changes between Runoffs 2018 and Runoffs 201915 ▾12 rule changes between Runoffs 2019 and Runoffs 202012 ▾10 rule changes between Runoffs 2020 and Runoffs 202110 ▾16 rule changes between Runoffs 2021 and Runoffs 202216 ▾12 rule changes between Runoffs 2022 and Runoffs 202312 ▾11 rule changes between Runoffs 2023 and Runoffs 202411 ▾7 rule changes between Runoffs 2024 and Runoffs 20257 ▾4 rule changes between Runoffs 2025 and Runoffs 20264 ▾FC race best at Runoffs 2015: 100.0% of FC's (Yufeng Luo)FC race best at Runoffs 2016: 100.0% of FC's (Nigel Saurino)FC race best at Runoffs 2017: 100.0% of FC's (Tim Minor)FC race best at Runoffs 2018: 100.0% of FC's (Mitch Egner)FC race best at Runoffs 2019: 100.0% of FC's (Robert Allaer)FC race best at Runoffs 2020: 100.0% of FC's (Robert Allaer)FC race best at Runoffs 2021: 100.0% of FC's (Simon Sikes)FC race best at Runoffs 2022: 100.0% of FC's (Nolan Allaer)FC race best at Runoffs 2023: 100.0% of FC's (Nolan Allaer)FC race best at Runoffs 2024: 100.0% of FC's (Michael Varacins)FC race best at Runoffs 2025: 100.0% of FC's (Brandon Dixon)FC race best at Runoffs 2026: 100.0% of FC's (Brandon Dixon)FC qualifying best at Runoffs 2015: 100.0% of FC's (Yufeng Luo)FC qualifying best at Runoffs 2016: 100.0% of FC's (John LaRue)FC qualifying best at Runoffs 2017: 100.0% of FC's (Austin McCusker)FC qualifying best at Runoffs 2018: 100.0% of FC's (Timothy de Silva)FC qualifying best at Runoffs 2019: 100.0% of FC's (Robert Allaer)FC qualifying best at Runoffs 2020: 100.0% of FC's (Robert Allaer)FC qualifying best at Runoffs 2021: 100.0% of FC's (Trent Walko)FC qualifying best at Runoffs 2022: 100.0% of FC's (Nolan Allaer)FC qualifying best at Runoffs 2023: 100.0% of FC's (Nolan Allaer)FC qualifying best at Runoffs 2024: 100.0% of FC's (Timothy Minor)FC qualifying best at Runoffs 2025: 100.0% of FC's (Brandon Dixon)FC qualifying best at Runoffs 2026: 100.0% of FC's (Brandon Dixon)P2 race best at Runoffs 2015: 97.6% of FC's (Jeff Shafer)P2 race best at Runoffs 2016: 98.6% of FC's (Jeff Shafer)P2 race best at Runoffs 2017: 95.4% of FC's (Jeff Shafer)P2 race best at Runoffs 2018: 97.9% of FC's (Chuck Bona)P2 race best at Runoffs 2019: 98.3% of FC's (Greg Gyann)P2 race best at Runoffs 2020: 97.1% of FC's (Robert Iversen)P2 race best at Runoffs 2021: 98.3% of FC's (Tim Day Jr)P2 race best at Runoffs 2022: 106.2% of FC's (Greg Gyann)P2 race best at Runoffs 2023: 97.9% of FC's (Lucian Pancea)P2 race best at Runoffs 2024: 97.6% of FC's (Bart Wolf)P2 race best at Runoffs 2026: 98.5% of FC's (Mike Reupert)P2 qualifying best at Runoffs 2015: 97.7% of FC's (Chris Farrell)P2 qualifying best at Runoffs 2016: 97.8% of FC's (Jeff Shafer)P2 qualifying best at Runoffs 2017: 95.3% of FC's (Jeff Shafer)P2 qualifying best at Runoffs 2018: 95.9% of FC's (Tim Day Jr)P2 qualifying best at Runoffs 2019: 98.1% of FC's (Robert Iversen)P2 qualifying best at Runoffs 2020: 96.9% of FC's (Robert Iversen)P2 qualifying best at Runoffs 2021: 96.3% of FC's (Tim Day Jr)P2 qualifying best at Runoffs 2022: 97.9% of FC's (Tim Day Jr)P2 qualifying best at Runoffs 2023: 98.5% of FC's (Greg Gyann)P2 qualifying best at Runoffs 2024: 96.8% of FC's (Bart Wolf)P2 qualifying best at Runoffs 2026: 99.9% of FC's (Greg Gyann)FB race best at Runoffs 2015: 96.9% of FC's (J R Osborne)FB race best at Runoffs 2016: 98.7% of FC's (Jeremy Hill)FB race best at Runoffs 2017: 96.7% of FC's (Alex Mayer)FB race best at Runoffs 2018: 97.0% of FC's (J R Osborne)FB race best at Runoffs 2019: 104.9% of FC's (Pete Frost)FB qualifying best at Runoffs 2015: 96.7% of FC's (J R Osborne)FB qualifying best at Runoffs 2016: 97.5% of FC's (Alex Mayer)FB qualifying best at Runoffs 2017: 97.3% of FC's (Gary Hickman)FB qualifying best at Runoffs 2018: 95.7% of FC's (J R Osborne)FB qualifying best at Runoffs 2019: 102.9% of FC's (Pete Frost)SM race best at Runoffs 2015: 125.1% of FC's (Todd Lamb)SM race best at Runoffs 2016: 122.8% of FC's (Michael Carter)SM race best at Runoffs 2017: 122.9% of FC's (Michael Gagliardo)SM race best at Runoffs 2018: 122.6% of FC's (Michael Carter)SM race best at Runoffs 2019: 121.6% of FC's (Elivan Goulart)SM race best at Runoffs 2020: 122.6% of FC's (Preston Pardus)SM race best at Runoffs 2021: 122.5% of FC's (Brian Henderson)SM race best at Runoffs 2022: 108.8% of FC's (Travis Wiley)SM race best at Runoffs 2023: 122.5% of FC's (Julian DaCosta)SM race best at Runoffs 2024: 122.8% of FC's (Brett Kowalski)SM race best at Runoffs 2025: 123.8% of FC's (Kyle Greenhill)SM race best at Runoffs 2026: 123.8% of FC's (Francisco Barroso)SM qualifying best at Runoffs 2015: 121.1% of FC's (Andrew Carbonell)SM qualifying best at Runoffs 2016: 122.6% of FC's (Justin Hille)SM qualifying best at Runoffs 2017: 122.8% of FC's (Chris Haldeman)SM qualifying best at Runoffs 2018: 123.5% of FC's (Ken Sutherland)SM qualifying best at Runoffs 2019: 121.0% of FC's (Todd Buras)SM qualifying best at Runoffs 2020: 122.3% of FC's (Kyle Greenhill)SM qualifying best at Runoffs 2021: 121.6% of FC's (Brian Henderson)SM qualifying best at Runoffs 2022: 122.5% of FC's (Danny Steyn)SM qualifying best at Runoffs 2023: 122.4% of FC's (Danny Steyn)SM qualifying best at Runoffs 2024: 122.4% of FC's (Ethan Goulart)SM qualifying best at Runoffs 2025: 124.3% of FC's (Bobby Gossett)SM qualifying best at Runoffs 2026: 124.1% of FC's (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
FCP2FBSMsolid race · dashed qualifying · each class's best lap as a share of FC's at the same event (the reference class, changeable above); 100% is level, less is quicker, so up the chart is quicker
EventFCP2FBSM
Qual best Race best Trap Qual best Race best Trap vs FC % of FC Qual best Race best Trap vs FC % of FC Qual best Race best Trap vs FC % of FC 
Road America Runoffs 20262026-09-282:10.686Brandon 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%)2:10.606Greg Gyann · fastest of 11 · top 5 within 5.3s+3.201s (+2.51%)2:09.441Mike Reupert · fastest of 11 · top 5 within 4.2s+1.119s (+0.87%)155.0Matt Strand+2.4 mph (+1.6%)-1.948squal -0.080s98.5%qual 99.9%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%)+31.336squal +31.487s123.8%qual 124.1%
4 rule changes (FC: 2, SM: 2)1 weight · 1 wording · 2 othershowhide
  • SM Rear Toe Link #40271other
  • SM Part Number Change Request #39914wording
  • FC F2000 MZR Spec Line Clarity/Revision Requested #38927other
  • FC Adjust F2000 Metrik ZF2 weight #39612weight -20 lbs
Road America Runoffs 20252025-09-292:11.259Brandon 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%)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%)+31.606squal +31.852s123.8%qual 124.3%
7 rule changes (FC: 2, P2: 1, SM: 4)2 tyres & wheels · 2 weight · 1 wording · 2 othershowhide
  • SM SMX Data Submission - Penalties #38248other
  • SM SMX Penaly Clarification updated language #38337wording
  • SM Clarify Tire Marking Regs #38005tyres & wheels
  • P2 2000 cc Pinto Engine Car Weight #37187weight
  • SM E&O SMX Regs 9.1.7.1.D.5.u-.w #37070other
  • FC 9.1.1.10.h. FC Tire Rule #36533tyres & wheels
  • FC Change FF/FC Weight with Sequential Gearbox #36651weight
Road America Runoffs 20242024-10-012:11.626Timothy 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%)2:07.405Bart Wolf · fastest of 14 · top 5 within 3.0s-1.109s (-0.86%)2:08.322Bart Wolf · fastest of 13 · top 5 within 0.6s-1.471s (-1.13%)152.5Lucian Pancea-0.6 mph (-0.4%)-3.212squal -4.221s97.6%qual 96.8%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%)+29.952squal +29.480s122.8%qual 122.4%
11 rule changes (FC: 2, P2: 5, SM: 4)5 engine · 2 weight · 1 suspension & brakes · 1 tyres & wheels · 1 wording · 1 othershowhide
  • SM SMX Camera Rule Correction #36496wording
  • SM AIM ECU Protocol #36556engine
  • SM OE versus OEM Definitons #36608other
  • SM Shifter Bushing #36611suspension & brakes
  • P2 CN Spec ECU #35835engine
  • P2 E&O - Correct FIA Group CN spec line notes #35900tyres & wheels
  • FC Four Pot Calipers #35481weight
  • FC Please correct omitted punctuation #34890weight
  • P2 E&O - Clarify B.1 modified engine range in AMAC spec lines #35225engine
  • P2 Replacement Engine Crankcase for 07/08 Suzuki GSX-R1000 Engines #35340engine
  • P2 Correct Table 1 for Engine Date Range Specifications #35182engine
Virginia International Raceway Runoffs 20232023-09-231:50.281Nolan 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%)1:48.590Greg Gyann · fastest of 12 · top 5 within 1.7s+1.024s (+0.95%)1:48.829Lucian Pancea · fastest of 11 · top 5 within 0.9s-27.005s (-19.88%)150.9Lucian Pancea-0.2 mph (-0.2%)-2.340squal -1.691s97.9%qual 98.5%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%)+25.060squal +24.705s122.5%qual 122.4%
12 rule changes (FC: 3, P2: 8, SM: 1)5 weight · 3 engine · 2 tyres & wheels · 1 cars added · 1 wordingshowhide
  • FC Review FC Runoffs Tire Marking Rule #34274tyres & wheels
  • FC USF2000 Van Diemen with Mazda MZR LF-DE 2.0L in FC #34329weight
  • P2 Clarify minimum side body height requirement #34143tyres & wheels
  • P2 Clarify closed cockpit single seat car allowance #34144wording
  • P2 Remove redundant effective date language and update engine table #34012engine
  • P2 E&O - Correct dimensional equivalents #34038weight
  • FC E&O 9.1.1.B.16.j #33634engine
  • P2 Request to Classify Sebeco NP01 #33378cars added
  • P2 Radical spec line clarifications #33485weight
  • P2 E&O original class intent #33519weight
  • P2 Update Engine Table Spec Line B.1 #33608engine
  • SM BOP for NB1 and NB2 #32309weight
Virginia International Raceway Runoffs 20222022-09-241:49.895Nolan 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%)1:47.566Tim Day Jr · fastest of 12 · top 5 within 3.0s-1.545s (-1.42%)2:15.834Greg Gyann · fastest of 12 · top 5 within 10.1s+25.576s (+23.20%)151.1Robert Iversen+1.8 mph (+1.2%)+7.975squal -2.329s106.2%qual 97.9%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%)+11.248squal +24.769s108.8%qual 122.5%
16 rule changes (FC: 5, P2: 10, SM: 1)5 engine · 4 tyres & wheels · 1 aero · 1 suspension & brakes · 1 weight · 2 wording · 2 othershowhide
  • FC Add Specification to Performance Electronics ECU for Ford Zetec #32761engine
  • P2 E&O Clarification of Chassis Construction Requirements #32469tyres & wheels
  • P2 Clean up P2 wording #32525wording
  • P2 After Market to Aftermarket #32373other
  • SM Update GCR Section 9.1.7.3.A.1. #32217suspension & brakes
  • P2 Add spec line for Beasley B2 #32147weight
  • P2 E&O Table 1 spec line wing terminology #32148aero
  • P2 E&O class name #32196other
  • P2 E&O Engine section #31969engine
  • FC Clean up Chassis/Frame section #31867engine
  • P2 E&O letter #31539 – Control Area definition #31783tyres & wheels
  • FC Clarify Zetec ECU requirements #31554engine
  • P2 BoP adjustment effective 1-1-22 #31538engine
  • P2 E&O clarification of "Control Area" definition #31539tyres & wheels
  • FC Clarify composite anti-intrusion panel language #31426wording
  • FC Clarify tire marking requirements #31455tyres & wheels
Indianapolis Motor Speedway Runoffs 20212021-09-251:36.787Trent 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 Minor1:33.235Tim Day Jr · fastest of 16 · top 5 within 3.3s+1.409s (+1.53%)1:35.322Tim Day Jr · fastest of 10 · top 5 within 4.8s+2.841s (+3.07%)150.3Robert Iversen-1.658squal -3.552s98.3%qual 96.3%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+21.857squal +20.908s122.5%qual 121.6%
10 rule changes (FC: 1, P2: 8, SM: 1)3 engine · 1 induction · 1 tyres & wheels · 1 weight · 4 othershowhide
  • P2 P2 CN Engine Rebuild Clarification #31000engine
  • P2 F5 P2 Conversion #30856other
  • P2 Clarify minimum body width requirement #30859tyres & wheels
  • P2 E&O tonneau cover provision in cockpit opening section #30459other
  • P2 Remove effective dates in Table 1 #30468other
  • P2 E&O Maximum Valves Per Cylinder #30560engine
  • SM Updates - Obsolete Parts & BOP Parts #30438other
  • FC Request for FC Weight Change #30171weight
  • P2 Add a new spec line for a 2-cycle, 3-cylinder engine up to 820cc #30272engine
  • P2 Balance of Performance adjustments effective 01-01-2021 #29822induction
Road America Runoffs 20202020-10-022:12.644Robert Allaer · fastest of 13 · top 5 within 2.1s2:13.608Robert Allaer · fastest of 11 · top 5 within 1.2s142.4Robert Allaer2:08.514Robert Iversen · fastest of 12 · top 5 within 3.0s2:09.793Robert Iversen · fastest of 12 · top 5 within 3.9s153.1Robert Iversen-3.815squal -4.130s97.1%qual 96.9%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+30.140squal +29.565s122.6%qual 122.3%
12 rule changes (FC: 4, P2: 6, SM: 2)5 engine · 3 induction · 1 aero · 1 cars added · 1 suspension & brakes · 1 weightshowhide
  • FC Urgent: SCCA PE3 map unsuitable #29475induction
  • SM Radiator E&O Clarifications #29294engine
  • P2 E&O clarification of P2 rear wing requirements #29205aero
  • FC Request for weight adjustments to equalize FC competition. #28888weight
  • SM Modifications to prevent failures of Rear Brake Caliper Pin #28953suspension & brakes
  • P2 Classify Elan NP01 in P2 Table 1 #28812cars added
  • P2 SCCA Enterprises ESR / P2 engine restrictor testing #28669induction
  • P2 Add ESR inlet restrictor #27869induction
  • P2 Request for Fly by Wire Rule Wording Change #28247engine
  • P2 Request for addition of BMW Engine in P2 Engine Table #27821engine
  • FC Request for Better Zetec Connecting Rods #27710engine
  • FC Add Alternate Piston #27795engine
Virginia International Raceway Runoffs 20192019-10-051:51.200Robert Allaer · fastest of 10 · top 5 within 3.1s1:52.174Robert Allaer · fastest of 9 · top 5 within 2.7s141.8Robert Allaer1:49.111Robert Iversen · fastest of 14 · top 5 within 0.8s1:50.258Greg Gyann · fastest of 13 · top 5 within 0.4s149.4Robert Iversen-1.916squal -2.089s98.3%qual 98.1%1:54.469Pete Frost · only car1:57.688Pete Frost · only car145.9Pete Frost+5.514squal +3.269s104.9%qual 102.9%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+24.285squal +23.352s121.6%qual 121.0%
15 rule changes (FC: 2, P2: 9, SM: 4)5 engine · 5 weight · 2 induction · 2 tyres & wheels · 1 wordingshowhide
  • P2 Update Engine Table Line E notes #27414engine
  • P2 Update P2 Engine Table spec lines to reflect 3/1/2019 #27254engine
  • P2 E&O Transmissions #27006tyres & wheels
  • P2 Request to restrict all cars #26246weight
  • FC E&O Wiseco piston and Crower connecting rod #26659weight
  • P2 Change Engine Table Lines B.1 & B.5 #25777engine
  • P2 Change Line A.1 restrictor size #26429induction
  • SM Request to allow aftermarket fuel filters. #26370wording
  • 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
  • FC Correct Wiseco piston and connecting rod #25809weight
  • P2 Request to Allow 1345cc Hayabusa Engines for Spec Line P2 Cars #25595engine
  • P2 Change CN inlet restrictor implementation date #25816induction
  • P2 Clarify Honda K20A-FD2 parts requirement #25950weight
Sonoma Raceway Runoffs 20182018-10-101:32.571Timothy de Silva · fastest of 16 · top 5 within 1.8s1:34.053Mitch Egner · fastest of 12 · top 5 within 1.6s133.1Robert Armington1:28.784Tim Day Jr · fastest of 17 · top 5 within 5.0s1:32.071Chuck Bona · fastest of 18 · top 5 within 0.9s144.4Tim Day Jr-1.982squal -3.787s97.9%qual 95.9%1:28.612J 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-2.864squal -3.959s97.0%qual 95.7%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+21.225squal +21.784s122.6%qual 123.5%
No rule changes on record between these events
Indianapolis Motor Speedway Runoffs 20172017-09-251:36.336Austin McCusker · fastest of 14 · top 5 within 2.3s1:36.890Tim Minor · fastest of 14 · top 5 within 3.8s1:31.826Jeff Shafer · fastest of 26 · top 5 within 4.9s1:32.481Jeff Shafer · fastest of 24 · top 5 within 3.8s-4.409squal -4.510s95.4%qual 95.3%1:33.746Gary Hickman · fastest of 18 · top 5 within 3.3s1:33.702Alex Mayer · fastest of 17 · top 5 within 3.0s-3.188squal -2.590s96.7%qual 97.3%1:58.306Chris Haldeman · fastest of 86 · top 5 within 0.5s1:59.100Michael Gagliardo · fastest of 83 · top 5 within 0.6s+22.210squal +21.970s122.9%qual 122.8%
No rule changes on record between these events
Mid-Ohio Sports Car Course Runoffs 20162016-09-191:21.962John LaRue · fastest of 7 · top 5 within 2.6s1:22.049Nigel Saurino · fastest of 7 · top 5 within 3.0s1:20.188Jeff Shafer · fastest of 18 · top 5 within 4.0s1:20.904Jeff Shafer · fastest of 16 · top 5 within 2.2s-1.145squal -1.774s98.6%qual 97.8%1:19.886Alex Mayer · fastest of 10 · top 5 within 1.5s1:21.015Jeremy Hill · fastest of 10 · top 5 within 1.2s-1.034squal -2.076s98.7%qual 97.5%1:40.514Justin Hille · fastest of 45 · top 5 within 0.3s1:40.764Michael Carter · fastest of 44 · top 5 within 0.3s+18.715squal +18.552s122.8%qual 122.6%
No rule changes on record between these events
Daytona International Speedway Runoffs 20152015-09-211:54.477Yufeng Luo · fastest of 11 · top 5 within 2.5s1:55.135Yufeng Luo · fastest of 10 · top 5 within 2.1s1:51.825Chris Farrell · fastest of 17 · top 5 within 3.6s1:52.355Jeff Shafer · fastest of 17 · top 5 within 2.8s-2.780squal -2.652s97.6%qual 97.7%1:50.711J R Osborne · fastest of 20 · top 5 within 1.1s1:51.616J R Osborne · fastest of 19 · top 5 within 2.1s-3.519squal -3.766s96.9%qual 96.7%2:18.661Andrew Carbonell · fastest of 62 · top 5 within 0.6s2:24.067Todd Lamb · fastest of 59 · top 5 within 0.8s+28.932squal +24.184s125.1%qual 121.1%

By track

TrackEvents Typical % of FC 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 FC'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.