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BoP Lab / Classes / FM

FM vs FE2 vs SM vs SRF3 pace at every track

Lap times across years say as much about the weather as the class. % of FM is each class's best lap as a share of FM'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-SpecEPFAFCvsFE2×FFFM×FPFVFXGT1GT2GTXHPPP2vsSM×SMXvsSRF3×STLSTUT1T2T3T4Show 50 inactive classes
Series
Reference · what % is measured against
Tracks · untick to narrow

Closest to the field: FM 100.0% of FM Joseph Burton-Harris, Daytona International Speedway Runoffs 2015 race · FE2 82.6% of FM Liam Snyder, Virginia International Raceway Runoffs 2019 race · SM 100.5% of FM Elivan Goulart, Virginia International Raceway Runoffs 2019 race · SRF3 91.9% of FM Bobby Sak, Virginia International Raceway Runoffs 2019 race

1:402:002:202:407 rule changes between Runoffs 2018 and Runoffs 20197 ▾11 rule changes between Runoffs 2019 and Runoffs 202011 ▾7 rule changes between Runoffs 2020 and Runoffs 20217 ▾4 rule changes between Runoffs 2021 and Runoffs 20224 ▾5 rule changes between Runoffs 2022 and Runoffs 20235 ▾14 rule changes between Runoffs 2023 and Runoffs 202414 ▾8 rule changes between Runoffs 2024 and Runoffs 20258 ▾5 rule changes between Runoffs 2025 and Runoffs 20265 ▾FM race best at Runoffs 2015: 1:58.029 (Joseph Burton-Harris)FM race best at Runoffs 2016: 1:27.922 (Jacob Loomis)FM race best at Runoffs 2017: 1:41.146 (Jarret Voorhies)FM race best at Runoffs 2018: 1:37.909 (Bryce Cornet)FM race best at Runoffs 2019: 2:15.816 (Bryce Cornet)FM qualifying best at Runoffs 2015: 1:57.804 (Joseph Burton-Harris)Off the chart: FM qualifying best at Runoffs 2016: 1:26.043 (Jacob Loomis)FM qualifying best at Runoffs 2017: 1:41.231 (Jarret Voorhies)FM qualifying best at Runoffs 2018: 1:37.598 (Bryce Cornet)FM qualifying best at Runoffs 2019: 1:55.124 (Bryce Cornet)FE2 race best at Runoffs 2018: 1:35.563 (Flinn Lazier)FE2 race best at Runoffs 2019: 1:52.154 (Liam Snyder)FE2 race best at Runoffs 2020: 2:13.271 (Owen McAllister)FE2 race best at Runoffs 2021: 1:36.655 (Max Grau)FE2 race best at Runoffs 2022: 2:12.045 (Jason Conzo)FE2 race best at Runoffs 2023: 1:51.098 (Franklin Futrelle)FE2 race best at Runoffs 2024: 2:12.748 (Porter Aiken)FE2 race best at Runoffs 2025: 2:13.339 (Franklin Futrelle)FE2 race best at Runoffs 2026: 2:11.881 (Franklin Futrelle)FE2 qualifying best at Runoffs 2018: 1:35.040 (Flinn Lazier)FE2 qualifying best at Runoffs 2019: 1:51.062 (Liam Snyder)FE2 qualifying best at Runoffs 2020: 2:12.806 (Scott Rettich)FE2 qualifying best at Runoffs 2021: 1:36.395 (Max Grau)FE2 qualifying best at Runoffs 2022: 1:50.853 (Charles Russell Turner)FE2 qualifying best at Runoffs 2023: 1:50.665 (Charles Russell Turner)FE2 qualifying best at Runoffs 2024: 2:11.506 (Porter Aiken)FE2 qualifying best at Runoffs 2025: 2:12.475 (Franklin Futrelle)FE2 qualifying best at Runoffs 2026: 2:12.326 (Franklin Futrelle)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)SRF3 race best at Runoffs 2015: 2:10.215 (Chad Galloway)SRF3 race best at Runoffs 2016: 1:34.947 (Cliff White)SRF3 race best at Runoffs 2017: 1:49.782 (Tray Ayres)SRF3 race best at Runoffs 2018: 1:47.053 (TJ Acker)SRF3 race best at Runoffs 2019: 2:04.755 (Bobby Sak)SRF3 race best at Runoffs 2020: 2:31.038 (Justin Hille)SRF3 race best at Runoffs 2021: 1:50.095 (John Black)SRF3 race best at Runoffs 2022: 2:22.066 (Franklin Futrelle)SRF3 race best at Runoffs 2023: 2:04.911 (David Ogburn)SRF3 race best at Runoffs 2024: 2:28.129 (S Sandy Satullo III)SRF3 race best at Runoffs 2025: 2:29.839 (Morgan Burkhard)SRF3 race best at Runoffs 2026: 2:29.257 (Peyton Long)SRF3 qualifying best at Runoffs 2015: 2:08.557 (Kerry Jacobsen)SRF3 qualifying best at Runoffs 2016: 1:34.363 (John Black)SRF3 qualifying best at Runoffs 2017: 1:49.824 (John Black)SRF3 qualifying best at Runoffs 2018: 1:46.117 (Robeson Clay Russell)SRF3 qualifying best at Runoffs 2019: 2:04.624 (Brian Schofield)SRF3 qualifying best at Runoffs 2020: 2:29.786 (TJ Acker)SRF3 qualifying best at Runoffs 2021: 1:49.520 (Franklin Futrelle)SRF3 qualifying best at Runoffs 2022: 2:03.716 (Franklin Futrelle)SRF3 qualifying best at Runoffs 2023: 2:03.842 (Morgan Burkhard)SRF3 qualifying best at Runoffs 2024: 2:27.773 (Denny Stripling)SRF3 qualifying best at Runoffs 2025: 2:28.226 (Bobby Sak)SRF3 qualifying best at Runoffs 2026: 2:27.443 (Tyler Stephens)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
FMFE2SMSRF3solid race · dashed qualifying · slower is lower
90%100%110%120%7 rule changes between Runoffs 2018 and Runoffs 20197 ▾11 rule changes between Runoffs 2019 and Runoffs 202011 ▾7 rule changes between Runoffs 2020 and Runoffs 20217 ▾4 rule changes between Runoffs 2021 and Runoffs 20224 ▾5 rule changes between Runoffs 2022 and Runoffs 20235 ▾14 rule changes between Runoffs 2023 and Runoffs 202414 ▾8 rule changes between Runoffs 2024 and Runoffs 20258 ▾5 rule changes between Runoffs 2025 and Runoffs 20265 ▾FM race best at Runoffs 2015: 100.0% of FM's (Joseph Burton-Harris)FM race best at Runoffs 2016: 100.0% of FM's (Jacob Loomis)FM race best at Runoffs 2017: 100.0% of FM's (Jarret Voorhies)FM race best at Runoffs 2018: 100.0% of FM's (Bryce Cornet)FM race best at Runoffs 2019: 100.0% of FM's (Bryce Cornet)FM qualifying best at Runoffs 2015: 100.0% of FM's (Joseph Burton-Harris)FM qualifying best at Runoffs 2016: 100.0% of FM's (Jacob Loomis)FM qualifying best at Runoffs 2017: 100.0% of FM's (Jarret Voorhies)FM qualifying best at Runoffs 2018: 100.0% of FM's (Bryce Cornet)FM qualifying best at Runoffs 2019: 100.0% of FM's (Bryce Cornet)FE2 race best at Runoffs 2018: 97.6% of FM's (Flinn Lazier)Off the chart: FE2 race best at Runoffs 2019: 82.6% of FM's (Liam Snyder)FE2 qualifying best at Runoffs 2018: 97.4% of FM's (Flinn Lazier)FE2 qualifying best at Runoffs 2019: 96.5% of FM's (Liam Snyder)Off the chart: SM race best at Runoffs 2015: 122.1% of FM's (Todd Lamb)SM race best at Runoffs 2016: 114.6% of FM's (Michael Carter)SM race best at Runoffs 2017: 117.8% of FM's (Michael Gagliardo)SM race best at Runoffs 2018: 117.7% of FM's (Michael Carter)SM race best at Runoffs 2019: 100.5% of FM's (Elivan Goulart)SM qualifying best at Runoffs 2015: 117.7% of FM's (Andrew Carbonell)SM qualifying best at Runoffs 2016: 116.8% of FM's (Justin Hille)SM qualifying best at Runoffs 2017: 116.9% of FM's (Chris Haldeman)SM qualifying best at Runoffs 2018: 117.2% of FM's (Ken Sutherland)SM qualifying best at Runoffs 2019: 116.9% of FM's (Todd Buras)SRF3 race best at Runoffs 2015: 110.3% of FM's (Chad Galloway)SRF3 race best at Runoffs 2016: 108.0% of FM's (Cliff White)SRF3 race best at Runoffs 2017: 108.5% of FM's (Tray Ayres)SRF3 race best at Runoffs 2018: 109.3% of FM's (TJ Acker)SRF3 race best at Runoffs 2019: 91.9% of FM's (Bobby Sak)SRF3 qualifying best at Runoffs 2015: 109.1% of FM's (Kerry Jacobsen)SRF3 qualifying best at Runoffs 2016: 109.7% of FM's (John Black)SRF3 qualifying best at Runoffs 2017: 108.5% of FM's (John Black)SRF3 qualifying best at Runoffs 2018: 108.7% of FM's (Robeson Clay Russell)SRF3 qualifying best at Runoffs 2019: 108.3% of FM's (Brian Schofield)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
FMFE2SMSRF3solid race · dashed qualifying · each class's best lap as a share of FM's at the same event (the reference class, changeable above); 100% is level, less is quicker, so up the chart is quicker
EventFMFE2SMSRF3
Qual best Race best Trap Qual best Race best Trap vs FM % of FM Qual best Race best Trap vs FM % of FM Qual best Race best Trap vs FM % of FM 
Road America Runoffs 20262026-09-282:12.326Franklin Futrelle · fastest of 8 · top 5 within 1.9s-0.149s (-0.11%)2:11.881Franklin Futrelle · fastest of 8 · top 5 within 1.6s-1.458s (-1.09%)143.5Steve Whitston-5.5 mph (-3.7%)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%)2:27.443Tyler Stephens · fastest of 44 · top 5 within 0.3s-0.783s (-0.53%)2:29.257Peyton Long · fastest of 42 · top 5 within 0.3s-0.582s (-0.39%)134.1Bobby Sak+0.4 mph (+0.3%)
5 rule changes (FE2: 1, SM: 2, SRF3: 2)1 wording · 4 othershowhide
  • SM Rear Toe Link #40271other
  • SM Part Number Change Request #39914wording
  • SRF3 SRF3 Spark Plugs #39899other
  • FE2 FE & FE2 Bubble Tail #38978other
  • SRF3 Add HD Oil Cooler #38979other
Road America Runoffs 20252025-09-292:12.475Franklin Futrelle · fastest of 11 · top 5 within 1.4s+0.969s (+0.74%)2:13.339Franklin Futrelle · fastest of 10 · top 5 within 0.6s+0.591s (+0.45%)149.0Steve Whitston+3.7 mph (+2.6%)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%)2:28.226Bobby Sak · fastest of 43 · top 5 within 0.6s+0.453s (+0.31%)2:29.839Morgan Burkhard · fastest of 42 · top 5 within 0.3s+1.710s (+1.15%)133.7Bobby Sak-1.5 mph (-1.1%)
8 rule changes (FE2: 1, SM: 4, SRF3: 3)1 tyres & wheels · 1 weight · 1 wording · 5 othershowhide
  • SRF3 SRF Rule Updates #38853weight
  • SM SMX Data Submission - Penalties #38248other
  • SM SMX Penaly Clarification updated language #38337wording
  • SM Clarify Tire Marking Regs #38005tyres & wheels
  • FE2 Driver Safety & Comfort #37965other
  • SRF3 Driver Safety & Comfort #37966other
  • SRF3 Update SADEV transmission specs #37992other
  • SM E&O SMX Regs 9.1.7.1.D.5.u-.w #37070other
Road America Runoffs 20242024-10-012:11.506Porter Aiken · fastest of 18 · top 5 within 0.5s-1.300s (-0.98%)2:12.748Porter Aiken · fastest of 17 · top 5 within 2.0s-0.523s (-0.39%)145.3Porter Aiken+1.9 mph (+1.3%)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%)2:27.773Denny Stripling · fastest of 57 · top 5 within 0.3s-2.013s (-1.34%)2:28.129S Sandy Satullo III · fastest of 52 · top 5 within 0.7s-2.909s (-1.93%)135.2Denny Stripling+3.4 mph (+2.6%)
14 rule changes (SM: 4, SRF3: 10)4 suspension & brakes · 3 tyres & wheels · 2 weight · 1 engine · 1 wording · 3 othershowhide
  • SRF3 Update SRF3 Air Filter Rule #36681other
  • SRF3 Update SRF Brake Rotor Thickness #36687suspension & brakes
  • SRF3 Hoosier Tire Decal Placement #36739tyres & wheels
  • SM SMX Camera Rule Correction #36496wording
  • SM AIM ECU Protocol #36556engine
  • SM OE versus OEM Definitons #36608other
  • SM Shifter Bushing #36611suspension & brakes
  • SRF3 Update to Letter 36619 with new Hoosier Contingency Decal Info #36624tyres & wheels
  • SRF3 Update Rain Tire Rule and Hoosier Decal Placement #36436tyres & wheels
  • SRF3 SRF3 Alternator Pulley Update In #36095weight
  • SRF3 Update SRF Rain / Brake Rule #34706suspension & brakes
  • SRF3 Update SRF Brake Light Rule v1 #34853suspension & brakes
  • SRF3 SRF / SRF3 Rule Updates #35268weight
  • SRF3 SRF Radiator Rule Update #34805other
Virginia International Raceway Runoffs 20232023-09-231:50.665Charles Russell Turner · fastest of 26 · top 5 within 2.3s-0.188s (-0.17%)1:51.098Franklin Futrelle · fastest of 19 · top 5 within 1.4s-20.947s (-15.86%)141.3Franklin Futrelle-0.6 mph (-0.4%)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%)2:03.842Morgan Burkhard · fastest of 40 · top 5 within 0.2s+0.126s (+0.10%)2:04.911David Ogburn · fastest of 39 · top 5 within 0.3s-17.155s (-12.08%)134.5Bobby Sak+0.1 mph (+0.0%)
5 rule changes (SM: 1, SRF3: 4)3 tyres & wheels · 1 suspension & brakes · 1 weightshowhide
  • SRF3 Hoosier SRF Wet Front Tire Rule Update #34189tyres & wheels
  • SRF3 Update SRF Front W2 Rain Tire Part Number #34118tyres & wheels
  • SRF3 Update SRF Brake Rule #33469suspension & brakes
  • SRF3 Update SRF Bodywork Fitment Rule #33765tyres & wheels
  • SM BOP for NB1 and NB2 #32309weight
Virginia International Raceway Runoffs 20222022-09-241:50.853Charles Russell Turner · fastest of 25 · top 5 within 1.1s-0.209s (-0.19%)2:12.045Jason Conzo · fastest of 22 · top 5 within 1.8s+19.891s (+17.74%)141.9Eric Cruz-0.6 mph (-0.5%)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%)2:03.716Franklin Futrelle · fastest of 44 · top 5 within 0.6s-0.908s (-0.73%)2:22.066Franklin Futrelle · fastest of 40 · top 5 within 1.2s+17.311s (+13.88%)134.5David Ogburn+2.1 mph (+1.6%)
4 rule changes (SM: 1, SRF3: 3)2 suspension & brakes · 1 tyres & wheels · 1 weightshowhide
  • SRF3 SRF Tire Rule Update #32614tyres & wheels
  • SRF3 Brake, seal, and air filter clarifications #32670suspension & brakes
  • SM Update GCR Section 9.1.7.3.A.1. #32217suspension & brakes
  • SRF3 Three Updates to SRF Rules #31523weight
Indianapolis Motor Speedway Runoffs 20212021-09-251:36.395Max Grau · fastest of 28 · top 5 within 0.7s1:36.655Max Grau · fastest of 28 · top 5 within 0.7s146.2Gray Fowler1:57.695Brian 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 Greenhill1:49.520Franklin Futrelle · fastest of 84 · top 5 within 0.5s-0.304s (-0.28%)1:50.095John Black · fastest of 82 · top 5 within 0.2s+0.313s (+0.29%)132.1Matthew Horst
7 rule changes (SM: 1, SRF3: 6)2 engine · 1 suspension & brakes · 1 tyres & wheels · 1 weight · 2 othershowhide
  • SRF3 SRF Wet Tires #30849tyres & wheels
  • SRF3 SADEV-SRF3 Transmission #30926other
  • SRF3 SRF Update Maintenance, Repairs and Seals #30961engine
  • SRF3 SRF3 Alternator Pulley #30684weight
  • SM Updates - Obsolete Parts & BOP Parts #30438other
  • SRF3 Mandatory identification: #30223engine
  • SRF3 SRF Shocks, Springs and Ride Height. #29688suspension & brakes
Road America Runoffs 20202020-10-022:12.806Scott Rettich · fastest of 25 · top 5 within 0.6s2:13.271Owen McAllister · fastest of 23 · top 5 within 0.7s143.4Owen McAllister2:42.209Kyle Greenhill · fastest of 77 · top 5 within 0.5s2:43.748Preston Pardus · fastest of 75 · top 5 within 1.0s121.3Kyle Greenhill2:29.786TJ Acker · fastest of 59 · top 5 within 0.5s2:31.038Justin Hille · fastest of 55 · top 5 within 0.2s131.9Charles Russell Turner
11 rule changes (FE2: 2, SM: 2, SRF3: 7)5 suspension & brakes · 2 weight · 1 engine · 1 tyres & wheels · 1 wording · 1 othershowhide
  • SM Radiator E&O Clarifications #29294engine
  • FE2 FE/FE2 Oil Cooler #29293wording
  • SM Modifications to prevent failures of Rear Brake Caliper Pin #28953suspension & brakes
  • SRF3 SRF Shocks #28791suspension & brakes
  • SRF3 Update Bump Stop Rule #28712suspension & brakes
  • SRF3 SRF Bump Stop Correction #27019suspension & brakes
  • SRF3 SRF Rain / Brake Rule - BoD approved as follows #34958suspension & brakes
  • FE2 FE / FE2 Update Rules #27624weight
  • SRF3 SRF Tire Warmer Rule #27622tyres & wheels
  • SRF3 SRF / SRF3 Nose Weight Reduction #27706weight
  • SRF3 SRF / SRF3 Majors & Regional Class Updates #27723other
Virginia International Raceway Runoffs 20192019-10-051:55.124Bryce Cornet · fastest of 8 · top 5 within 2.3s2:15.816Bryce Cornet · fastest of 8 · top 5 within 4.9s135.7Bryce Cornet1:51.062Liam Snyder · fastest of 20 · top 5 within 1.3s1:52.154Liam Snyder · fastest of 19 · top 5 within 0.7s142.6Robert Vanman-23.662squal -4.062s82.6%qual 96.5%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+0.643squal +19.428s100.5%qual 116.9%2:04.624Brian Schofield · fastest of 54 · top 5 within 0.6s2:04.755Bobby Sak · fastest of 53 · top 5 within 0.3s132.4Bobby Sak-11.061squal +9.500s91.9%qual 108.3%
7 rule changes (SM: 4, SRF3: 3)1 engine · 1 suspension & brakes · 1 tyres & wheels · 1 weight · 1 wording · 2 othershowhide
  • SRF3 SRF Dash Windscreen Kit #27028other
  • SRF3 New SRF Sectional Nose Rule Addition #26914other
  • SRF3 SRF Brakes and Shock Rule Changes #26629suspension & brakes
  • 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
Sonoma Raceway Runoffs 20182018-10-101:37.598Bryce Cornet · fastest of 13 · top 5 within 0.9s1:37.909Bryce Cornet · fastest of 12 · top 5 within 1.3s124.1Melvin David Kemper Jr1:35.040Flinn Lazier · fastest of 9 · top 5 within 1.5s1:35.563Flinn Lazier · fastest of 9 · top 5 within 1.7s126.8Scott Rettich-2.346squal -2.558s97.6%qual 97.4%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+17.369squal +16.757s117.7%qual 117.2%1:46.117Robeson Clay Russell · fastest of 36 · top 5 within 0.5s1:47.053TJ Acker · fastest of 35 · top 5 within 0.2s110.2Steve Fogg+9.144squal +8.519s109.3%qual 108.7%
No rule changes on record between these events
Indianapolis Motor Speedway Runoffs 20172017-09-251:41.231Jarret Voorhies · fastest of 16 · top 5 within 1.7s1:41.146Jarret Voorhies · fastest of 16 · top 5 within 1.2s1:58.306Chris Haldeman · fastest of 86 · top 5 within 0.5s1:59.100Michael Gagliardo · fastest of 83 · top 5 within 0.6s+17.954squal +17.075s117.8%qual 116.9%1:49.824John Black · fastest of 101 · top 5 within 0.5s1:49.782Tray Ayres · fastest of 94 · top 5 within 0.4s+8.636squal +8.593s108.5%qual 108.5%
No rule changes on record between these events
Mid-Ohio Sports Car Course Runoffs 20162016-09-191:26.043Jacob Loomis · fastest of 8 · top 5 within 3.1s1:27.922Jacob Loomis · fastest of 8 · top 5 within 2.7s1:40.514Justin Hille · fastest of 45 · top 5 within 0.3s1:40.764Michael Carter · fastest of 44 · top 5 within 0.3s+12.842squal +14.471s114.6%qual 116.8%1:34.363John Black · fastest of 41 · top 5 within 0.5s1:34.947Cliff White · fastest of 39 · top 5 within 0.3s+7.025squal +8.320s108.0%qual 109.7%
No rule changes on record between these events
Daytona International Speedway Runoffs 20152015-09-211:57.804Joseph Burton-Harris · fastest of 10 · top 5 within 2.3s1:58.029Joseph Burton-Harris · fastest of 10 · top 5 within 1.7s2:18.661Andrew Carbonell · fastest of 62 · top 5 within 0.6s2:24.067Todd Lamb · fastest of 59 · top 5 within 0.8s+26.038squal +20.857s122.1%qual 117.7%2:08.557Kerry Jacobsen · fastest of 29 · top 5 within 1.1s2:10.215Chad Galloway · fastest of 29 · top 5 within 0.3s+12.186squal +10.753s110.3%qual 109.1%

By track

TrackEvents Typical % of FM Best Latest 
Road America40 of 4 with FM
Virginia International Raceway3100.0%1 of 3 with FM100.0%Runoffs 2019100.0%Runoffs 2019
Indianapolis Motor Speedway2100.0%1 of 2 with FM100.0%Runoffs 2017100.0%Runoffs 2017
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 FM'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.