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BoP Lab / Classes / EP

EP vs AS vs FV vs SRF3 pace at every track

Lap times across years say as much about the weather as the class. % of EP is each class's best lap as a share of EP'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)
vsAS×B-SpecEP×FAFCFE2FFFPvsFV×FXGT1GT2GTXHPPP2SMSMXvsSRF3×STLSTUT1T2T3T4Show 51 inactive classes
Series
Reference · what % is measured against, 12 events
Tracks · untick to narrow

Closest to the field: EP 100.0% of EP Kip Van Steenburg, Daytona International Speedway Runoffs 2015 race · AS 82.6% of EP Gregory Eaton, Virginia International Raceway Runoffs 2022 race · FV 91.5% of EP Andrew Whitston, Virginia International Raceway Runoffs 2022 race · SRF3 94.2% of EP Franklin Futrelle, Virginia International Raceway Runoffs 2022 race

1:402:002:202:4023 rule changes between Runoffs 2018 and Runoffs 201923 ▾43 rule changes between Runoffs 2019 and Runoffs 202043 ▾34 rule changes between Runoffs 2020 and Runoffs 202134 ▾37 rule changes between Runoffs 2021 and Runoffs 202237 ▾21 rule changes between Runoffs 2022 and Runoffs 202321 ▾37 rule changes between Runoffs 2023 and Runoffs 202437 ▾28 rule changes between Runoffs 2024 and Runoffs 202528 ▾36 rule changes between Runoffs 2025 and Runoffs 202636 ▾EP race best at Runoffs 2015: 2:05.109 (Kip Van Steenburg)EP race best at Runoffs 2016: 1:34.266 (Michael Galati)EP race best at Runoffs 2017: 1:50.396 (Matt Reynolds)EP race best at Runoffs 2018: 1:46.518 (Glen McCready)EP race best at Runoffs 2019: 2:01.631 (Jesse Prather)EP race best at Runoffs 2020: 2:29.047 (Jesse Prather)EP race best at Runoffs 2021: 1:49.928 (Jesse Prather)EP race best at Runoffs 2022: 2:30.855 (Jesse Prather)EP race best at Runoffs 2023: 2:04.050 (Greg Ira)EP race best at Runoffs 2024: 2:27.869 (Tyler Ladd)EP race best at Runoffs 2025: 2:28.756 (Tyler Ladd)EP race best at Runoffs 2026: 2:27.869 (Jon Brakke)EP qualifying best at Runoffs 2015: 2:03.794 (Kip Van Steenburg)EP qualifying best at Runoffs 2016: 1:33.847 (Michael Galati)EP qualifying best at Runoffs 2017: 1:49.597 (Matt Reynolds)EP qualifying best at Runoffs 2018: 1:45.828 (Glen McCready)EP qualifying best at Runoffs 2019: 2:00.987 (Jesse Prather)EP qualifying best at Runoffs 2020: 2:27.322 (Jesse Prather)EP qualifying best at Runoffs 2021: 1:48.181 (Jesse Prather)EP qualifying best at Runoffs 2022: 2:02.326 (Jesse Prather)EP qualifying best at Runoffs 2023: 2:03.215 (John Hainsworth)EP qualifying best at Runoffs 2024: 2:26.803 (Tyler Ladd)EP qualifying best at Runoffs 2025: 2:27.293 (Jon Brakke)EP qualifying best at Runoffs 2026: 2:29.239 (Jon Brakke)AS race best at Runoffs 2015: 2:02.922 (Andy McDermid)AS race best at Runoffs 2016: 1:33.424 (Edward Hosni)AS race best at Runoffs 2017: 1:51.507 (Bryan Long)AS race best at Runoffs 2018: 1:50.345 (John Heinricy)AS race best at Runoffs 2019: 2:03.900 (James Jost)AS race best at Runoffs 2020: 2:27.668 (Gregory Eaton)AS race best at Runoffs 2021: 1:50.606 (Gregory Eaton)AS race best at Runoffs 2022: 2:04.578 (Gregory Eaton)AS race best at Runoffs 2023: 2:04.120 (Gregory Eaton)AS race best at Runoffs 2024: 2:26.429 (Gregory Eaton)AS race best at Runoffs 2025: 2:29.232 (Gregory Eaton)AS race best at Runoffs 2026: 2:28.471 (Andrew McDermid)AS qualifying best at Runoffs 2015: 2:01.746 (Tom Sloe)AS qualifying best at Runoffs 2016: 1:30.651 (Tom Sloe)AS qualifying best at Runoffs 2017: 1:45.220 (James Jost)AS qualifying best at Runoffs 2018: 1:47.782 (Andrew McDermid)AS qualifying best at Runoffs 2019: 2:02.938 (Gregory Eaton)AS qualifying best at Runoffs 2020: 2:27.045 (Gregory Eaton)AS qualifying best at Runoffs 2021: 1:50.427 (Drew Cattell)AS qualifying best at Runoffs 2022: 2:02.162 (Kurt Rezzetano)AS qualifying best at Runoffs 2023: 2:03.082 (Daniel Richardson)AS qualifying best at Runoffs 2024: 2:26.578 (Gregory Eaton)AS qualifying best at Runoffs 2025: 2:26.792 (Andrew McDermid)AS qualifying best at Runoffs 2026: 2:26.911 (Andrew McDermid)FV race best at Runoffs 2015: 2:21.142 (Andrew Whitston)FV race best at Runoffs 2016: 1:38.066 (Flinn Lazier)FV race best at Runoffs 2017: 1:55.923 (Michael Varacins)FV race best at Runoffs 2018: 1:53.639 (Alex Scaler)FV race best at Runoffs 2019: 2:18.289 (Zachary Whitston)FV race best at Runoffs 2020: 2:45.816 (Alex Scaler)FV race best at Runoffs 2021: 1:57.234 (Alex Scaler)FV race best at Runoffs 2022: 2:18.093 (Andrew Whitston)FV race best at Runoffs 2023: 2:16.611 (Andrew Abbott)FV race best at Runoffs 2024: 2:44.834 (Andrew Abbott)FV race best at Runoffs 2025: 2:46.736 (Zachary Whitston)FV race best at Runoffs 2026: 2:45.272 (Brian Farnham)FV qualifying best at Runoffs 2015: 2:21.167 (Roger Siebenaler)FV qualifying best at Runoffs 2016: 1:37.942 (Alex Scaler)FV qualifying best at Runoffs 2017: 1:55.759 (Michael Varacins)FV qualifying best at Runoffs 2018: 1:52.637 (Skip Streets)FV qualifying best at Runoffs 2019: 2:15.712 (Andrew Whitston)FV qualifying best at Runoffs 2020: 2:43.994 (Hunter Phelps-Barron)FV qualifying best at Runoffs 2021: 1:57.479 (Andrew Whitston)FV qualifying best at Runoffs 2022: 2:15.116 (Brian Farnham)FV qualifying best at Runoffs 2023: 2:15.639 (Andrew Whitston)FV qualifying best at Runoffs 2024: 2:42.643 (Andrew Whitston)FV qualifying best at Runoffs 2025: 2:44.101 (Andrew Abbott)FV qualifying best at Runoffs 2026: 2:46.536 (Zachary Whitston)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
EPASFVSRF3solid race · dashed qualifying · slower is lower
95%100%105%110%23 rule changes between Runoffs 2018 and Runoffs 201923 ▾43 rule changes between Runoffs 2019 and Runoffs 202043 ▾34 rule changes between Runoffs 2020 and Runoffs 202134 ▾37 rule changes between Runoffs 2021 and Runoffs 202237 ▾21 rule changes between Runoffs 2022 and Runoffs 202321 ▾37 rule changes between Runoffs 2023 and Runoffs 202437 ▾28 rule changes between Runoffs 2024 and Runoffs 202528 ▾36 rule changes between Runoffs 2025 and Runoffs 202636 ▾EP race best at Runoffs 2015: 100.0% of EP's (Kip Van Steenburg)EP race best at Runoffs 2016: 100.0% of EP's (Michael Galati)EP race best at Runoffs 2017: 100.0% of EP's (Matt Reynolds)EP race best at Runoffs 2018: 100.0% of EP's (Glen McCready)EP race best at Runoffs 2019: 100.0% of EP's (Jesse Prather)EP race best at Runoffs 2020: 100.0% of EP's (Jesse Prather)EP race best at Runoffs 2021: 100.0% of EP's (Jesse Prather)EP race best at Runoffs 2022: 100.0% of EP's (Jesse Prather)EP race best at Runoffs 2023: 100.0% of EP's (Greg Ira)EP race best at Runoffs 2024: 100.0% of EP's (Tyler Ladd)EP race best at Runoffs 2025: 100.0% of EP's (Tyler Ladd)EP race best at Runoffs 2026: 100.0% of EP's (Jon Brakke)EP qualifying best at Runoffs 2015: 100.0% of EP's (Kip Van Steenburg)EP qualifying best at Runoffs 2016: 100.0% of EP's (Michael Galati)EP qualifying best at Runoffs 2017: 100.0% of EP's (Matt Reynolds)EP qualifying best at Runoffs 2018: 100.0% of EP's (Glen McCready)EP qualifying best at Runoffs 2019: 100.0% of EP's (Jesse Prather)EP qualifying best at Runoffs 2020: 100.0% of EP's (Jesse Prather)EP qualifying best at Runoffs 2021: 100.0% of EP's (Jesse Prather)EP qualifying best at Runoffs 2022: 100.0% of EP's (Jesse Prather)EP qualifying best at Runoffs 2023: 100.0% of EP's (John Hainsworth)EP qualifying best at Runoffs 2024: 100.0% of EP's (Tyler Ladd)EP qualifying best at Runoffs 2025: 100.0% of EP's (Jon Brakke)EP qualifying best at Runoffs 2026: 100.0% of EP's (Jon Brakke)AS race best at Runoffs 2015: 98.3% of EP's (Andy McDermid)AS race best at Runoffs 2016: 99.1% of EP's (Edward Hosni)AS race best at Runoffs 2017: 101.0% of EP's (Bryan Long)AS race best at Runoffs 2018: 103.6% of EP's (John Heinricy)AS race best at Runoffs 2019: 101.9% of EP's (James Jost)AS race best at Runoffs 2020: 99.1% of EP's (Gregory Eaton)AS race best at Runoffs 2021: 100.6% of EP's (Gregory Eaton)Off the chart: AS race best at Runoffs 2022: 82.6% of EP's (Gregory Eaton)AS race best at Runoffs 2023: 100.1% of EP's (Gregory Eaton)AS race best at Runoffs 2024: 99.0% of EP's (Gregory Eaton)AS race best at Runoffs 2025: 100.3% of EP's (Gregory Eaton)AS race best at Runoffs 2026: 100.4% of EP's (Andrew McDermid)AS qualifying best at Runoffs 2015: 98.3% of EP's (Tom Sloe)AS qualifying best at Runoffs 2016: 96.6% of EP's (Tom Sloe)AS qualifying best at Runoffs 2017: 96.0% of EP's (James Jost)AS qualifying best at Runoffs 2018: 101.8% of EP's (Andrew McDermid)AS qualifying best at Runoffs 2019: 101.6% of EP's (Gregory Eaton)AS qualifying best at Runoffs 2020: 99.8% of EP's (Gregory Eaton)AS qualifying best at Runoffs 2021: 102.1% of EP's (Drew Cattell)AS qualifying best at Runoffs 2022: 99.9% of EP's (Kurt Rezzetano)AS qualifying best at Runoffs 2023: 99.9% of EP's (Daniel Richardson)AS qualifying best at Runoffs 2024: 99.8% of EP's (Gregory Eaton)AS qualifying best at Runoffs 2025: 99.7% of EP's (Andrew McDermid)AS qualifying best at Runoffs 2026: 98.4% of EP's (Andrew McDermid)FV race best at Runoffs 2015: 112.8% of EP's (Andrew Whitston)FV race best at Runoffs 2016: 104.0% of EP's (Flinn Lazier)FV race best at Runoffs 2017: 105.0% of EP's (Michael Varacins)FV race best at Runoffs 2018: 106.7% of EP's (Alex Scaler)FV race best at Runoffs 2019: 113.7% of EP's (Zachary Whitston)FV race best at Runoffs 2020: 111.3% of EP's (Alex Scaler)FV race best at Runoffs 2021: 106.6% of EP's (Alex Scaler)Off the chart: FV race best at Runoffs 2022: 91.5% of EP's (Andrew Whitston)FV race best at Runoffs 2023: 110.1% of EP's (Andrew Abbott)FV race best at Runoffs 2024: 111.5% of EP's (Andrew Abbott)FV race best at Runoffs 2025: 112.1% of EP's (Zachary Whitston)FV race best at Runoffs 2026: 111.8% of EP's (Brian Farnham)FV qualifying best at Runoffs 2015: 114.0% of EP's (Roger Siebenaler)FV qualifying best at Runoffs 2016: 104.4% of EP's (Alex Scaler)FV qualifying best at Runoffs 2017: 105.6% of EP's (Michael Varacins)FV qualifying best at Runoffs 2018: 106.4% of EP's (Skip Streets)FV qualifying best at Runoffs 2019: 112.2% of EP's (Andrew Whitston)FV qualifying best at Runoffs 2020: 111.3% of EP's (Hunter Phelps-Barron)FV qualifying best at Runoffs 2021: 108.6% of EP's (Andrew Whitston)FV qualifying best at Runoffs 2022: 110.5% of EP's (Brian Farnham)FV qualifying best at Runoffs 2023: 110.1% of EP's (Andrew Whitston)FV qualifying best at Runoffs 2024: 110.8% of EP's (Andrew Whitston)FV qualifying best at Runoffs 2025: 111.4% of EP's (Andrew Abbott)FV qualifying best at Runoffs 2026: 111.6% of EP's (Zachary Whitston)SRF3 race best at Runoffs 2015: 104.1% of EP's (Chad Galloway)SRF3 race best at Runoffs 2016: 100.7% of EP's (Cliff White)SRF3 race best at Runoffs 2017: 99.4% of EP's (Tray Ayres)SRF3 race best at Runoffs 2018: 100.5% of EP's (TJ Acker)SRF3 race best at Runoffs 2019: 102.6% of EP's (Bobby Sak)SRF3 race best at Runoffs 2020: 101.3% of EP's (Justin Hille)SRF3 race best at Runoffs 2021: 100.2% of EP's (John Black)SRF3 race best at Runoffs 2022: 94.2% of EP's (Franklin Futrelle)SRF3 race best at Runoffs 2023: 100.7% of EP's (David Ogburn)SRF3 race best at Runoffs 2024: 100.2% of EP's (S Sandy Satullo III)SRF3 race best at Runoffs 2025: 100.7% of EP's (Morgan Burkhard)SRF3 race best at Runoffs 2026: 100.9% of EP's (Peyton Long)SRF3 qualifying best at Runoffs 2015: 103.8% of EP's (Kerry Jacobsen)SRF3 qualifying best at Runoffs 2016: 100.5% of EP's (John Black)SRF3 qualifying best at Runoffs 2017: 100.2% of EP's (John Black)SRF3 qualifying best at Runoffs 2018: 100.3% of EP's (Robeson Clay Russell)SRF3 qualifying best at Runoffs 2019: 103.0% of EP's (Brian Schofield)SRF3 qualifying best at Runoffs 2020: 101.7% of EP's (TJ Acker)SRF3 qualifying best at Runoffs 2021: 101.2% of EP's (Franklin Futrelle)SRF3 qualifying best at Runoffs 2022: 101.1% of EP's (Franklin Futrelle)SRF3 qualifying best at Runoffs 2023: 100.5% of EP's (Morgan Burkhard)SRF3 qualifying best at Runoffs 2024: 100.7% of EP's (Denny Stripling)SRF3 qualifying best at Runoffs 2025: 100.6% of EP's (Bobby Sak)SRF3 qualifying best at Runoffs 2026: 98.8% of EP's (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
EPASFVSRF3solid race · dashed qualifying · each class's best lap as a share of EP's at the same event (the reference class, changeable above); 100% is level, less is quicker, so up the chart is quicker
EventEPASFVSRF3
Qual best Race best Trap Qual best Race best Trap vs EP % of EP Qual best Race best Trap vs EP % of EP Qual best Race best Trap vs EP % of EP 
Road America Runoffs 20262026-09-282:29.239Jon Brakke · fastest of 15 · top 5 within 5.2s+1.946s (+1.32%)2:27.869Jon Brakke · fastest of 15 · top 5 within 5.2s-0.887s (-0.60%)137.0Jon Brakke-3.8 mph (-2.7%)2:26.911Andrew McDermid · fastest of 8 · top 5 within 3.4s+0.119s (+0.08%)2:28.471Andrew McDermid · fastest of 8 · top 5 within 2.4s-0.761s (-0.51%)151.0Andrew McDermid-0.6 mph (-0.4%)+0.602squal -2.328s100.4%qual 98.4%2:46.536Zachary Whitston · fastest of 37 · top 5 within 1.7s+2.435s (+1.48%)2:45.272Brian Farnham · fastest of 34 · top 5 within 1.3s-1.464s (-0.88%)117.4Rick Shields+0.2 mph (+0.1%)+17.403squal +17.297s111.8%qual 111.6%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%)+1.388squal -1.796s100.9%qual 98.8%
36 rule changes (EP: 21, AS: 13, SRF3: 2)11 weight · 7 engine · 6 induction · 3 tyres & wheels · 1 removed · 1 suspension & brakes · 3 wording · 4 othershowhide
  • AS 2016+ Camaro Spec Line Full Prep #39646tyres & wheels
  • AS Consideration of Pirelli P Zero Trofeo Track for AS Competition #40495tyres & wheels
  • AS Change in 9.1.6.D.4.d.5 in Suspension Mounting Points #40094other
  • AS Re-Add 4.6L 4v 96-04 Mustang Cobra #40239weight
  • AS Errors and Omissions #40532weight
  • EP Mini Cooper Compression Ratio #40517engine
  • EP 1996-2000 Honda Civic (CX, DX, VP, LX) with Engine Code D16Y7 #40322engine
  • EP 1275 Midget/Sprit Alternate intake manifold E/O #40370induction
  • EP HP Honda Civic (92-95) #40464weight -70 lbs
  • AS Clarification for LM7 Holley Carburetor #40167engine
  • EP Honda S2000 Hardtop #40138other
  • EP Miata track width - errors and omissions #39976wording
  • EP Triumph GT6 Spec Change. #40098induction
  • AS Header Information Update for EFI Engine Build Sheets #39886engine
  • AS Errors and Omissions #39933weight
  • AS Re-Organization of AS Spec lines for 2026 #39887removed
  • SRF3 SRF3 Spark Plugs #39899other
  • AS Edelbrock manifold (& timing kit) to Chevy LS Spec Lines Request #39055weight
  • AS Restrictor Plate Change for Gen 2 Ford Coyote Engine #39501induction
  • EP Request to Update E30 BMW Throttle Body Diameter Verbiage #39363induction
  • AS 1994 Mustang Spec Line Request #39104engine
  • EP TR2 Notes E&O #39180weight
  • EP Balance of Power #39187weight +50 lbs
  • AS Cadillac CTS-V BOP Weight Change #38640weight -50 lbs
  • EP Please Lower Weight of 280Z #38871weight -160 lbs
  • EP Miata Weight Adjustment Follow Up #38949weight -25 lbs
  • EP Weight Break for 1098 Midget / Sprite #38970weight -80 lbs
  • EP HP Volvo 142 spec omission #38994engine
  • EP HP Mini DOHC 1.6 #38996engine
  • EP Add to Rabbit description #39019wording
  • EP Clean-up 9.1.5.E.7e #39025suspension & brakes
  • EP Add TB size to Ford Mustang (94-98) Spec Line #39130induction
  • EP HP Plymouth Arrow spec omission #38995wording
  • EP Add Wheel Diameter to Appendix G #39008tyres & wheels
  • EP Add TB ID tolerance to general Prod rules #39009induction
  • SRF3 Add HD Oil Cooler #38979other
Road America Runoffs 20252025-09-292:27.293Jon Brakke · fastest of 21 · top 5 within 2.1s+0.490s (+0.33%)2:28.756Tyler Ladd · fastest of 19 · top 5 within 1.9s+0.887s (+0.60%)140.8Jon Brakke+0.1 mph (+0.1%)2:26.792Andrew McDermid · fastest of 11 · top 5 within 3.9s+0.214s (+0.15%)2:29.232Gregory Eaton · fastest of 10 · top 5 within 4.0s+2.803s (+1.91%)151.5Andrew McDermid+1.9 mph (+1.3%)+0.476squal -0.501s100.3%qual 99.7%2:44.101Andrew Abbott · fastest of 34 · top 5 within 1.3s+1.458s (+0.90%)2:46.736Zachary Whitston · fastest of 29 · top 5 within 0.6s+1.902s (+1.15%)117.2Zachary Whitston+0.7 mph (+0.6%)+17.980squal +16.808s112.1%qual 111.4%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%)+1.083squal +0.933s100.7%qual 100.6%
28 rule changes (EP: 14, AS: 11, SRF3: 3)11 weight · 5 engine · 5 induction · 1 cars added · 1 wording · 5 othershowhide
  • SRF3 SRF Rule Updates #38853weight
  • AS RE: Previous Letter 37695 Update #38245weight -75 lbs
  • EP BMW Z4 update #38490induction
  • EP EP Fiat 124 Spider Competition Adjustment Request #38498weight -50 lbs
  • AS Errors and Omissions #38234engine
  • EP Base Weight Adjustment for H-Production X1/9 Spec Lines #38255weight -50 lbs
  • AS Errors and Omission #38055induction
  • AS Request to Add LS1/LS6 Intakes for 5.3L Truck Engine EnO #38197engine
  • AS Flotek Head Plunge Cut Inconsistencies #37502other
  • AS Notes clean up #37693weight
  • EP Request for Classification of Chevrolet Spark #37755cars added
  • EP Request to Lower Ford Festiva Minimum Weight to 1600 LBS #37939weight -100 lbs
  • SRF3 Driver Safety & Comfort #37966other
  • SRF3 Update SADEV transmission specs #37992other
  • AS Race memo #37902engine
  • EP Request Competition Adjustment to BMW Z3 2.5L #37120induction
  • EP Interpretation of Production Rules on Mirrors #37235other
  • EP Weight Reduction for Honda S2000 #37466weight
  • EP Mazda 1999 Miata 1.8L #37488weight -50 lbs
  • EP Effective date for Jan 2025 GCR updates #37654induction
  • AS Increase Coyote Engine Restrictor to 80mm #36177induction
  • AS Performance Pack for 2015+ Mustang #36867weight
  • AS Gear Ratios #37131engine
  • AS ECU specs for LS engine #37208engine
  • EP Request to Reduce Weight of BMW 325i/is E30 (84-91) Spec Line #37119weight -50 lbs
  • EP Triumph GT6 Adjustments #37112weight
  • EP 1275 HP Spridget Level 2 Only #36518other
  • EP NA Miata Track Width Correction #36902wording
Road America Runoffs 20242024-10-012:26.803Tyler Ladd · fastest of 16 · top 5 within 4.1s-0.519s (-0.35%)2:27.869Tyler Ladd · fastest of 16 · top 5 within 3.6s-1.178s (-0.79%)140.7Bill Miller-1.0 mph (-0.7%)2:26.578Gregory Eaton · fastest of 18 · top 5 within 2.6s-0.467s (-0.32%)2:26.429Gregory Eaton · fastest of 18 · top 5 within 2.5s-1.239s (-0.84%)149.6Gregory Eaton+0.4 mph (+0.3%)-1.440squal -0.225s99.0%qual 99.8%2:42.643Andrew Whitston · fastest of 27 · top 5 within 2.3s-1.351s (-0.82%)2:44.834Andrew Abbott · fastest of 27 · top 5 within 0.9s-0.982s (-0.59%)116.5Brian Farnham-0.7 mph (-0.6%)+16.965squal +15.840s111.5%qual 110.8%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%)+0.260squal +0.970s100.2%qual 100.7%
37 rule changes (EP: 14, AS: 11, FV: 2, SRF3: 10)9 weight · 8 cars added · 5 tyres & wheels · 4 suspension & brakes · 3 engine · 1 induction · 1 wording · 6 othershowhide
  • FV Disc Brakes #36822suspension & brakes
  • SRF3 Update SRF3 Air Filter Rule #36681other
  • SRF3 Update SRF Brake Rotor Thickness #36687suspension & brakes
  • SRF3 Hoosier Tire Decal Placement #36739tyres & wheels
  • AS Mustang transmission ratios #36662engine
  • SRF3 Update to Letter 36619 with new Hoosier Contingency Decal Info #36624tyres & wheels
  • EP Errant entry in HP production line item #36231other
  • SRF3 Update Rain Tire Rule and Hoosier Decal Placement #36436tyres & wheels
  • AS Request for Classification of 2018-2023 mustang In #35764cars added
  • EP NIssan 300ZX Z31 to EP #35830cars added
  • EP RX7 1993 and Up Request In EP Spec Lines, classify #36031cars added
  • EP Clean-up Multiple EP RX-8 Spec Lines In EP #36156wording
  • SRF3 SRF3 Alternator Pulley Update In #36095weight
  • AS 6th gen Camaro limited prep #35733cars added
  • AS Chevrolet/Pontiac Camaro & Firebird (82-92) 5.7L V8 LS1 Alum BLK #35825cars added
  • AS Full Prep Head #35891other
  • AS Restricted Prep Aftermarket Parts Request #35682other
  • AS Allowance of 11 #35824tyres & wheels
  • AS Request to Classify 1970-1981 Camaro and Firebird in AS #33659cars added
  • AS Fuel Cell 12 #34194other
  • AS Please Classify the 6th Gen Into AS. #35448cars added
  • AS spec lines #35713cars added
  • EP GCR Correction - Redundant HP Spec Lines #35623engine
  • EP Update 1988-1991 Civic to Match 1988-1991 CRX #35399weight
  • EP Request to Review Z3 2.5 Spec Line #35073weight +50 lbs
  • EP Miata Alternate Head #35253weight -50 lbs
  • EP Triumph GT6 Adjustments #35255weight
  • EP Honda S2000 throttle body #35272induction
  • EP Correction within Triumph TR8 Spec Line #35315engine
  • EP Correction to EP 924S/944 Spec Line #35317weight
  • SRF3 Update SRF Rain / Brake Rule #34706suspension & brakes
  • SRF3 Update SRF Brake Light Rule v1 #34853suspension & brakes
  • SRF3 SRF / SRF3 Rule Updates #35268weight
  • EP Porsche 944/924S Rule Change Request #35002weight
  • EP Triumph GT6 Adjustments #35054weight -30 lbs
  • FV FV Wheel Bearing Clarification #35150tyres & wheels
  • SRF3 SRF Radiator Rule Update #34805other
Virginia International Raceway Runoffs 20232023-09-232:03.215John Hainsworth · fastest of 24 · top 5 within 4.3s+0.889s (+0.73%)2:04.050Greg Ira · fastest of 22 · top 5 within 5.3s-26.805s (-17.77%)144.6Greg Ira+3.1 mph (+2.2%)2:03.082Daniel Richardson · fastest of 11 · top 5 within 2.2s+0.920s (+0.75%)2:04.120Gregory Eaton · fastest of 9 · top 5 within 3.0s-0.458s (-0.37%)154.6James Jost+3.7 mph (+2.5%)+0.070squal -0.133s100.1%qual 99.9%2:15.639Andrew Whitston · fastest of 27 · top 5 within 1.4s+0.523s (+0.39%)2:16.611Andrew Abbott · fastest of 23 · top 5 within 1.6s-1.482s (-1.07%)115.6Brian Farnham-0.2 mph (-0.2%)+12.561squal +12.424s110.1%qual 110.1%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%)+0.861squal +0.627s100.7%qual 100.5%
21 rule changes (EP: 13, AS: 4, SRF3: 4)5 engine · 4 suspension & brakes · 4 tyres & wheels · 3 induction · 2 weight · 1 wording · 2 othershowhide
  • EP Hub Note Clean Up In EP TR8 Spec Line #34649wording
  • EP Triumph GT6 Adjustments #34662other
  • EP Triumph GT6 Adjustments: Brakes #34663suspension & brakes
  • AS Crate Motor Part Numbers #32944engine
  • AS Request wheel size change #33007tyres & wheels
  • AS Alternative Upper Front Control Arms for Dodge Challenger #33352engine
  • AS Front Brake Caliper Adapters for Dodge Challenger #33353suspension & brakes
  • EP Correct Intake Valve Size on 1500cc Midget/Spitfire #34419induction
  • EP 914-6 Valve Size Correction #34185engine
  • SRF3 Hoosier SRF Wet Front Tire Rule Update #34189tyres & wheels
  • SRF3 Update SRF Front W2 Rain Tire Part Number #34118tyres & wheels
  • EP Investigate Parity of Z3 #33343induction
  • SRF3 Update SRF Brake Rule #33469suspension & brakes
  • SRF3 Update SRF Bodywork Fitment Rule #33765tyres & wheels
  • EP Revise 79-85 RX7 Brake Spec Line Allowance #33293suspension & brakes
  • EP Request alternate carburetors for EP 280z #33405engine
  • EP Fuel Injection 12a Mazda RX3 #33434engine
  • EP Mazda RX3 - Weight Reduction #33436weight -50 lbs
  • EP Request TR8 Dry Sump Allowance #33460other
  • EP Review Limited Prep Port Matching Rules #33600induction
  • EP 280ZX Classification Request #33611weight
Virginia International Raceway Runoffs 20222022-09-242:02.326Jesse Prather · fastest of 17 · top 5 within 3.2s+1.339s (+1.11%)2:30.855Jesse Prather · fastest of 15 · top 5 within 2.5s+29.224s (+24.03%)141.5Jesse Prather-6.0 mph (-4.1%)2:02.162Kurt Rezzetano · fastest of 13 · top 5 within 2.3s-0.776s (-0.63%)2:04.578Gregory Eaton · fastest of 11 · top 5 within 2.9s+0.678s (+0.55%)150.9James Jost-3.0 mph (-2.0%)-26.277squal -0.164s82.6%qual 99.9%2:15.116Brian Farnham · fastest of 29 · top 5 within 1.1s-0.596s (-0.44%)2:18.093Andrew Whitston · fastest of 28 · top 5 within 1.2s-0.196s (-0.14%)115.8Jonathan Weisheit+1.1 mph (+0.9%)-12.762squal +12.790s91.5%qual 110.5%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%)-8.789squal +1.390s94.2%qual 101.1%
37 rule changes (EP: 21, AS: 9, FV: 4, SRF3: 3)10 weight · 6 induction · 5 engine · 3 cars added · 3 tyres & wheels · 2 suspension & brakes · 3 wording · 5 othershowhide
  • AS Request to add Hoosier W2 #33031other
  • AS correction of Dodge Challenger specification line #33151wording
  • EP Request to classify VW New Beetle 2.5L in EP #32725cars added
  • EP Request Rotary Injection on Dual Y manifold #32775engine
  • EP Request for Corrado Stroke & Displacement Correction #32985engine
  • AS Request CTS-V Spec Line Error Correction #30242weight
  • EP Subaru BRZ Model Years #32500other
  • SRF3 SRF Tire Rule Update #32614tyres & wheels
  • SRF3 Brake, seal, and air filter clarifications #32670suspension & brakes
  • EP EP MX-5 Global Cup Car #32218weight
  • EP Please Class BMW 128i in EP #32370cars added
  • EP Inconsistency in Body Work Descriptions #32396other
  • EP Mazda RX8 with 13b Rotary #32170induction
  • EP Request Idle control valve clarification #32178engine
  • EP EP Adjustments #31858induction
  • EP 1999 3.8L Ford Mustang to EP? #31635weight
  • EP Improved Touring Tires #32064tyres & wheels
  • FV Connecting Rod Update Request for 9.1.1.C Formula Vee (FV) 5.C.6 #32160weight
  • FV E&O clarification of connecting rod center-to-center length #32183weight
  • EP Throttle Body and Idle Air #31800induction
  • EP Porsche 968 Engine Questions #31831engine
  • EP Request weight reduction for 1979-1985 Mazda RX-7 #31833weight
  • AS Proposed Revisions to SCCA GCR 2021 Appendix M, Part 3 #30295other
  • AS specification line consolidation and correction #31846wording
  • AS correction of SMG specification line #31847suspension & brakes
  • AS Alternate cylinder heads for full prep engine builds - Evaluation #31851engine
  • EP Porsche 968 Engine Questions #31478induction
  • EP PCS E. 2. n. 4. Add Axle Shaft to Allow FWD the Same Freedom #31592tyres & wheels
  • EP BMW Z3 2.5L Spec Line #31724induction
  • FV Update direct replacement connecting rod information #31843weight
  • EP 944S2 Restrictor #31396induction
  • EP Classing Clarification for 1986 Toyota Corolla FX16 #31527cars added
  • FV Formula V Connecting Rod Replacement #31448weight
  • SRF3 Three Updates to SRF Rules #31523weight
  • AS Request for adjustable Front Upper Control Arms on 4th Gen F-Body #30457other
  • AS Request Pontiac GTO tire size change #30881weight
  • EP E&O; MR2 Track #31120wording
Indianapolis Motor Speedway Runoffs 20212021-09-251:48.181Jesse Prather · fastest of 31 · top 5 within 3.2s-1.416s (-1.29%)1:49.928Jesse Prather · fastest of 27 · top 5 within 0.9s-0.468s (-0.42%)143.4Jon Brakke1:50.427Drew Cattell · fastest of 31 · top 5 within 1.9s+5.207s (+4.95%)1:50.606Gregory Eaton · fastest of 28 · top 5 within 1.7s-0.901s (-0.81%)153.8James Jost+0.678squal +2.246s100.6%qual 102.1%1:57.479Andrew Whitston · fastest of 48 · top 5 within 0.8s+1.720s (+1.49%)1:57.234Alex Scaler · fastest of 47 · top 5 within 1.0s+1.311s (+1.13%)124.0Mark Edwards+7.306squal +9.298s106.6%qual 108.6%1:49.520Franklin 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+0.167squal +1.339s100.2%qual 101.2%
34 rule changes (EP: 14, AS: 14, SRF3: 6)12 weight · 7 engine · 6 cars added · 3 suspension & brakes · 1 induction · 1 tyres & wheels · 3 wording · 1 othershowhide
  • EP Request to Allow F22c Engine for 2000-2003 Honda S2000 #30548engine
  • EP Request a review of the S14 240SX in EP. #30873weight -200 lbs
  • SRF3 SRF Wet Tires #30849tyres & wheels
  • SRF3 SADEV-SRF3 Transmission #30926other
  • SRF3 SRF Update Maintenance, Repairs and Seals #30961engine
  • EP Lotus/Caterham 7 America Request #30392engine
  • EP Reclassify Daimler SP 250 #30721cars added
  • AS Request CTS-V Spec Line Error Correction #30242weight
  • AS Request to consolidate SN95 Mustang '94-'04 Mustang spec lines #30428cars added
  • AS American Sedan Transmission Rule Change Request #30595weight
  • AS Correction to specifications inadvertently deleted #30691wording
  • AS weight adjustments #30700weight +50 lbs
  • EP Clarify Application of Percentage Based Weight Penalties #30669weight
  • SRF3 SRF3 Alternator Pulley #30684weight
  • EP Change Classification of 84-87 Mazda 626 from FP to HP #30350cars added
  • EP Fiat X1/9 brake rotors #30423suspension & brakes
  • EP NC MX-5 year range correction E&O #30503wording
  • EP Please Classify Mazda3 in FP #30165cars added
  • AS AS Mustang LP 4.6 3V Classification Transmission Request #29886weight
  • AS Request CF driveshaft on CTS-V for durability improvement #30117engine
  • AS Adjustment to model years of 5th generation RP Camaro #30348engine
  • SRF3 Mandatory identification: #30223engine
  • AS Request for 2015 -2017 Ford Mustang Spec Line #29514cars added
  • AS Request Trunk lid / Rear Hatch clarification #29591wording
  • AS Common Weight for CTS-V Tire #29759weight
  • AS Correction to specifications inadvertently deleted #30041cars added
  • EP Alternate Front Brake Rotors and Calipers for EP AH 3000 #29893suspension & brakes
  • AS Request Additional Engine Options for Dodge Challenger Spec Line #29543engine
  • AS Rule simplification spec line communization #29824weight
  • EP Mk2 VW Consistency and Cleanup of FP and HP Spec Lines #29195weight -50 lbs
  • EP Correct Wording for Level 1 and Level 2 Induction Systems #29406induction
  • EP Weight Reduction for Datsun Roadster #29409weight -75 lbs
  • EP EP TR8 Adjustment #29512weight -100 lbs
  • SRF3 SRF Shocks, Springs and Ride Height. #29688suspension & brakes
Road America Runoffs 20202020-10-022:27.322Jesse Prather · fastest of 20 · top 5 within 2.5s2:29.047Jesse Prather · fastest of 20 · top 5 within 2.8s141.7Jesse Prather2:27.045Gregory Eaton · fastest of 18 · top 5 within 0.6s2:27.668Gregory Eaton · fastest of 15 · top 5 within 1.5s149.2Gregory Eaton-1.379squal -0.277s99.1%qual 99.8%2:43.994Hunter Phelps-Barron · fastest of 28 · top 5 within 0.6s2:45.816Alex Scaler · fastest of 24 · top 5 within 1.5s117.1Hunter Phelps-Barron+16.769squal +16.672s111.3%qual 111.3%2:29.786TJ Acker · fastest of 59 · top 5 within 0.5s2:31.038Justin Hille · fastest of 55 · top 5 within 0.2s131.9Charles Russell Turner+1.991squal +2.464s101.3%qual 101.7%
43 rule changes (EP: 14, AS: 16, FV: 6, SRF3: 7)10 tyres & wheels · 7 engine · 7 induction · 7 suspension & brakes · 4 cars added · 3 weight · 1 aero · 1 wording · 3 othershowhide
  • EP 84-87 Toyota Corolla HP Wheel Diameter Allowance Proposal E&O #29458tyres & wheels
  • AS Dodge Challenger AS Spec Line Clarification #28698induction
  • AS Dodge Challenger AS Spec Line Clarification #2 #28699aero
  • EP EP BMW Z3 Rule Clarification #28998engine
  • AS Support for R-Type Specification Tires #27450tyres & wheels
  • AS Spec Tire Request #27519tyres & wheels
  • AS Restrictor Plate Change for RP 2011+ Mustang with Coyote Engine #27675induction
  • AS 2005-2009 Restricted Prep 4.6 3V #27908engine
  • AS Request for 2005-2009 Restricted Prep 4.6 3V Parts #27909engine
  • AS Request for Full Preparation Classification for 2010-2014 Camaro #28030other
  • AS Cylinder Heads #28696engine
  • AS Request for Max Rotor Diameter Change #28748suspension & brakes
  • AS Request increase rotor diameter #28797other
  • EP Request to Classify Porsche 911 2.0L #28456cars added
  • FV Support for Recommended Item - 4 bolt wheels in FV #29084tyres & wheels
  • FV Support for 4-bolt pattern wheels #28955 #29118tyres & wheels
  • EP BMW Cylinder Head Casting and Part Numbers #28708engine
  • SRF3 SRF Shocks #28791suspension & brakes
  • AS weight adjustments for 2020 season #28785weight -50 lbs
  • EP Request to Classify 1990-1994 Mazda Protege #28381cars added
  • EP Error in Mini Cooper Spec Line #28713wording
  • SRF3 Update Bump Stop Rule #28712suspension & brakes
  • SRF3 SRF Bump Stop Correction #27019suspension & brakes
  • EP Caterham 7 Spec Line #28498engine
  • EP Request to Review Horsepower Parity #27662induction
  • EP E36 (92-95) Brakes Errors and Omissions #28058suspension & brakes
  • EP Request to allow 40 DCOE carb for the Datsun 510 #28195induction
  • EP Add Throttle Body Size these EP BMW Spec Lines #28422induction
  • FV Update rain tire designation #28444tyres & wheels
  • AS Rear Trailing Arms #28007suspension & brakes
  • AS Weight reduction for cars running iron heads #28010weight
  • AS 05-10 Mustang with HR cam classification #28226cars added
  • AS 10-15 Camaro Full Prep classification #28227cars added
  • EP Request for Help for Datsun 1200 #27934induction
  • EP Request to List Mazda Miata Throttle Body Size #27907induction
  • FV FV Allow non-spec tire in Regional competition #26284tyres & wheels
  • FV Request to Allow Rear Tires on the Front of Formula Vee #26537tyres & wheels
  • SRF3 SRF Rain / Brake Rule - BoD approved as follows #34958suspension & brakes
  • EP Re-organize Prep2 Cylinder Head Rules for Clarity & Consistency #27661engine
  • FV Clarification on Wheel Bolt Pattern #27603tyres & wheels
  • 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 20192019-10-052:00.987Jesse Prather · fastest of 29 · top 5 within 2.2s2:01.631Jesse Prather · fastest of 24 · top 5 within 1.4s147.5Kip Van Steenburg2:02.938Gregory Eaton · fastest of 17 · top 5 within 0.8s2:03.900James Jost · fastest of 16 · top 5 within 2.1s153.9James Jost+2.269squal +1.951s101.9%qual 101.6%2:15.712Andrew Whitston · fastest of 26 · top 5 within 1.5s2:18.289Zachary Whitston · fastest of 19 · top 5 within 0.4s114.8Roger Siebenaler+16.658squal +14.725s113.7%qual 112.2%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+3.124squal +3.637s102.6%qual 103.0%
23 rule changes (EP: 10, AS: 4, FV: 6, SRF3: 3)4 suspension & brakes · 3 induction · 2 cars added · 2 tyres & wheels · 2 weight · 1 engine · 1 wording · 8 othershowhide
  • AS Request to add SMG to 9.1.6.B.1 AS Intent #27140other
  • FV Allowed Modifications E&O #27398other
  • EP Request bodywork for Austin Healey Bugeye Sprite MK1 #27106other
  • EP Request to classify the GMX5 2019 #27263cars added
  • EP level one susp. component rule #27270suspension & brakes
  • EP Clarification of Carb Rules - Prep 1 #27300induction
  • EP Clarification of Carb Rules - Prep 2 #27301induction
  • FV E&O Wheels #27230tyres & wheels
  • AS Request Ride Height Clarification #26598suspension & brakes
  • EP Request Miata Eligibility - 2003 #27121other
  • SRF3 SRF Dash Windscreen Kit #27028other
  • AS Request to Revert to 2017 Weights #25885weight
  • FV Exhaust termination rule E&O #26702other
  • SRF3 New SRF Sectional Nose Rule Addition #26914other
  • EP Allow Firewall Modification for Fitment of 13B into RX8 #26726engine
  • FV E&O Dimensions #26674other
  • SRF3 SRF Brakes and Shock Rule Changes #26629suspension & brakes
  • EP Rollcenter Correction Clarification #25873tyres & wheels
  • EP Hardtops #26476wording
  • FV Request to clarify Disc Brake rules bearing retainer & weights #26262suspension & brakes
  • EP Request for Competition Adjustment for 2nd Generation RX7 #25935weight -50 lbs
  • AS SMG Mustang eligibility in American sedan #26224cars added
  • FV FV Intake Manifold Clarification #26008induction
Sonoma Raceway Runoffs 20182018-10-101:45.828Glen McCready · fastest of 18 · top 5 within 4.3s1:46.518Glen McCready · fastest of 16 · top 5 within 2.8s106.5Aaron Downey1:47.782Andrew McDermid · fastest of 12 · top 5 within 1.9s1:50.345John Heinricy · fastest of 10 · top 5 within 2.3s105.0Kevin Fandozzi+3.827squal +1.954s103.6%qual 101.8%1:52.637Skip Streets · fastest of 29 · top 5 within 1.6s1:53.639Alex Scaler · fastest of 28 · top 5 within 0.4s106.3Skip Streets+7.121squal +6.809s106.7%qual 106.4%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+0.535squal +0.289s100.5%qual 100.3%
No rule changes on record between these events
Indianapolis Motor Speedway Runoffs 20172017-09-251:49.597Matt Reynolds · fastest of 44 · top 5 within 1.2s1:50.396Matt Reynolds · fastest of 45 · top 5 within 0.5s1:45.220James Jost · fastest of 29 · top 5 within 6.7s1:51.507Bryan Long · fastest of 28 · top 5 within 0.9s+1.111squal -4.377s101.0%qual 96.0%1:55.759Michael Varacins · fastest of 39 · top 5 within 1.0s1:55.923Michael Varacins · fastest of 32 · top 5 within 1.3s+5.527squal +6.162s105.0%qual 105.6%1:49.824John Black · fastest of 101 · top 5 within 0.5s1:49.782Tray Ayres · fastest of 94 · top 5 within 0.4s-0.614squal +0.227s99.4%qual 100.2%
No rule changes on record between these events
Mid-Ohio Sports Car Course Runoffs 20162016-09-191:33.847Michael Galati · fastest of 25 · top 5 within 0.8s1:34.266Michael Galati · fastest of 23 · top 5 within 1.3s1:30.651Tom Sloe · fastest of 22 · top 5 within 3.6s1:33.424Edward Hosni · fastest of 20 · top 5 within 1.0s-0.842squal -3.196s99.1%qual 96.6%1:37.942Alex Scaler · fastest of 41 · top 5 within 0.3s1:38.066Flinn Lazier · fastest of 38 · top 5 within 0.7s+3.800squal +4.095s104.0%qual 104.4%1:34.363John Black · fastest of 41 · top 5 within 0.5s1:34.947Cliff White · fastest of 39 · top 5 within 0.3s+0.681squal +0.516s100.7%qual 100.5%
No rule changes on record between these events
Daytona International Speedway Runoffs 20152015-09-212:03.794Kip Van Steenburg · fastest of 29 · top 5 within 3.2s2:05.109Kip Van Steenburg · fastest of 28 · top 5 within 3.3s2:01.746Tom Sloe · fastest of 22 · top 5 within 2.6s2:02.922Andy McDermid · fastest of 19 · top 5 within 2.2s-2.187squal -2.048s98.3%qual 98.3%2:21.167Roger Siebenaler · fastest of 31 · top 5 within 0.8s2:21.142Andrew Whitston · fastest of 30 · top 5 within 1.1s+16.033squal +17.373s112.8%qual 114.0%2:08.557Kerry Jacobsen · fastest of 29 · top 5 within 1.1s2:10.215Chad Galloway · fastest of 29 · top 5 within 0.3s+5.106squal +4.763s104.1%qual 103.8%

By track

TrackEvents Typical % of EP 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 EP'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.