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F5 pace at every track

Lap times across years say as much about the weather as the class. % of the field is each class's best lap as a share of the field's on the same day (every class that ran that day but the ones shown, each scaled by its usual pace against SM and averaged, with each shown class's own track character taken out, so one figure reads the same across years and tracks), 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.

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Reference · what % is measured against, 8 eventsall classes that day, as if at an average track
Tracks · untick to narrow

Closest to the field: F5 86.1% of the field Sven de Vries, Indianapolis Motor Speedway Runoffs 2021 race

1:402:002:201 rule change between Runoffs 2018 and Runoffs 20191 ▾6 rule changes between Runoffs 2019 and Runoffs 20206 ▾3 rule changes between Runoffs 2020 and Runoffs 20213 ▾6 rule changes between Runoffs 2021 and Runoffs 20226 ▾F5 race best at Runoffs 2015: 2:03.298 (Matthew Strand)F5 race best at Runoffs 2016: 1:29.853 (Steven Thompson)F5 race best at Runoffs 2017: 1:42.860 (Wiley Clinton McMahan)F5 race best at Runoffs 2018: 1:42.491 (David Lapham)F5 race best at Runoffs 2019: 1:57.572 (Wiley Mcmahan)F5 race best at Runoffs 2020: 2:21.391 (James Weida)F5 race best at Runoffs 2021: 1:43.140 (Sven de Vries)F5 race best at Runoffs 2022: 2:21.862 (Sven de Vries)F5 qualifying best at Runoffs 2015: 2:01.824 (W. Clint McMahan)F5 qualifying best at Runoffs 2016: 1:28.528 (Calvin Stewart)F5 qualifying best at Runoffs 2017: 1:43.136 (Wiley Clinton McMahan)F5 qualifying best at Runoffs 2018: 1:41.807 (Jeff Jorgenson)F5 qualifying best at Runoffs 2019: 1:57.361 (Wiley Mcmahan)F5 qualifying best at Runoffs 2020: 2:20.954 (Calvin Stewart)F5 qualifying best at Runoffs 2021: 1:42.619 (Ryan Mayfield)F5 qualifying best at Runoffs 2022: 1:57.689 (James Weida)Daytona International Speedway · Runoffs 2015Runoffs2015Mid-Ohio Sports Car Course · Runoffs 2016Runoffs2016Indianapolis Motor Speedway · Runoffs 2017Runoffs2017Sonoma Raceway · Runoffs 2018Runoffs2018Virginia International Raceway · Runoffs 2019Runoffs2019Road America · Runoffs 2020Runoffs2020Indianapolis Motor Speedway · Runoffs 2021Runoffs2021Virginia International Raceway · Runoffs 2022Runoffs2022
F5solid race · dashed qualifying · slower is lowerIndianapolis Motor SpeedwayVirginia International RacewayDaytona International SpeedwayMid-Ohio Sports Car CourseRoad AmericaSonoma Raceway
86%88%90%92%94%96%1 rule change between Runoffs 2018 and Runoffs 20191 ▾6 rule changes between Runoffs 2019 and Runoffs 20206 ▾3 rule changes between Runoffs 2020 and Runoffs 20213 ▾6 rule changes between Runoffs 2021 and Runoffs 20226 ▾F5 race best at Runoffs 2015: 89.4% of Field's (Matthew Strand)F5 race best at Runoffs 2016: 90.0% of Field's (Steven Thompson)F5 race best at Runoffs 2017: 87.9% of Field's (Wiley Clinton McMahan)F5 race best at Runoffs 2018: 87.6% of Field's (David Lapham)F5 race best at Runoffs 2019: 86.8% of Field's (Wiley Mcmahan)F5 race best at Runoffs 2020: 88.3% of Field's (James Weida)F5 race best at Runoffs 2021: 86.1% of Field's (Sven de Vries)F5 race best at Runoffs 2022: 96.1% of Field's (Sven de Vries)F5 qualifying best at Runoffs 2015: 89.2% of Field's (W. Clint McMahan)F5 qualifying best at Runoffs 2016: 89.8% of Field's (Calvin Stewart)F5 qualifying best at Runoffs 2017: 88.9% of Field's (Wiley Clinton McMahan)F5 qualifying best at Runoffs 2018: 90.5% of Field's (Jeff Jorgenson)F5 qualifying best at Runoffs 2019: 88.9% of Field's (Wiley Mcmahan)F5 qualifying best at Runoffs 2020: 88.9% of Field's (Calvin Stewart)F5 qualifying best at Runoffs 2021: 88.6% of Field's (Ryan Mayfield)F5 qualifying best at Runoffs 2022: 89.3% of Field's (James Weida)Daytona International Speedway · Runoffs 2015Runoffs2015Mid-Ohio Sports Car Course · Runoffs 2016Runoffs2016Indianapolis Motor Speedway · Runoffs 2017Runoffs2017Sonoma Raceway · Runoffs 2018Runoffs2018Virginia International Raceway · Runoffs 2019Runoffs2019Road America · Runoffs 2020Runoffs2020Indianapolis Motor Speedway · Runoffs 2021Runoffs2021Virginia International Raceway · Runoffs 2022Runoffs2022
F5solid race · dashed qualifying · each class's best lap as a share of the field's at the same event (the field index, changeable above); 100% is level, less is quicker, so up the chart is quickerIndianapolis Motor SpeedwayVirginia International RacewayDaytona International SpeedwayMid-Ohio Sports Car CourseRoad AmericaSonoma Raceway
EventF5
Qual best Race best Trap % of the field 
Virginia International Raceway Runoffs 20222022-09-241:57.689James Weida · fastest of 11 · top 5 within 3.9s+0.328s (+0.28%)2:21.862Sven de Vries · fastest of 10 · top 5 within 14.3s+24.290s (+20.66%)142.9Calvin Stewart+0.1 mph (+0.1%)96.1%qual 89.3%
6 rule changes (F5: 6)2 engine · 2 induction · 2 othershowhide
  • Intake Boots Correction #33028induction
  • Ensure availability of ECU for Rotax engines #32695engine
  • Clarify stepped exhaust header references #32743engine
  • 593 carb boot availability and oil pump clarification #32527induction
  • E&O class name #32194other
  • Data Box Mounting Plate #31638other
Indianapolis Motor Speedway Runoffs 20212021-09-251:42.619Ryan Mayfield · fastest of 22 · top 5 within 1.6s-0.517s (-0.50%)1:43.140Sven de Vries · fastest of 20 · top 5 within 1.7s+0.280s (+0.27%)144.4James Weida86.1%qual 88.6%
3 rule changes (F5: 3)1 engine · 1 tyres & wheels · 1 wordingshowhide
  • Clarify allowable assisted shifting systems #30871wording
  • Request to correct terminology #30976tyres & wheels
  • Request to Allow Rotax 593 HO Engine #30712engine
Road America Runoffs 20202020-10-022:20.954Calvin Stewart · fastest of 16 · top 5 within 1.8s2:21.391James Weida · fastest of 14 · top 5 within 1.5s143.2Aaron Ellis88.3%qual 88.9%
6 rule changes (F5: 6)2 engine · 1 induction · 3 othershowhide
  • Request to Update Suzuki Engine Years for F500 #29453engine
  • Request for Cockpit Adjustment of External Jetting Devices #28359other
  • Two Stroke Motors (reply to #28359 WDYT) #28816engine
  • Re letter requesting driver adjustable carb mixture #28840other
  • #28359 WDYT Request for Cockpit Adjustment #28875other
  • Change 600cc restrictor size #27883induction
Virginia International Raceway Runoffs 20192019-10-051:57.361Wiley Mcmahan · fastest of 15 · top 5 within 3.8s1:57.572Wiley Mcmahan · fastest of 15 · top 5 within 4.0s142.8Eric McRee86.8%qual 88.9%
1 rule change (F5: 1)1 weightshowhide
  • Request for Weight Increase for Motorcycle Powered Cars #27214weight +25 lbs
Sonoma Raceway Runoffs 20182018-10-101:41.807Jeff Jorgenson · fastest of 5 · top 5 within 6.6s1:42.491David Lapham · fastest of 5 · top 5 within 9.5s113.3David Lapham87.6%qual 90.5%
No rule changes on record between these events
Indianapolis Motor Speedway Runoffs 20172017-09-251:43.136Wiley Clinton McMahan · fastest of 38 · top 5 within 1.4s1:42.860Wiley Clinton McMahan · fastest of 37 · top 5 within 1.6s87.9%qual 88.9%
No rule changes on record between these events
Mid-Ohio Sports Car Course Runoffs 20162016-09-191:28.528Calvin Stewart · fastest of 14 · top 5 within 3.9s1:29.853Steven Thompson · fastest of 12 · top 5 within 4.5s90.0%qual 89.8%
No rule changes on record between these events
Daytona International Speedway Runoffs 20152015-09-212:01.824W. Clint McMahan · fastest of 16 · top 5 within 3.0s2:03.298Matthew Strand · fastest of 15 · top 5 within 4.9s89.4%qual 89.2%

By track

TrackEvents Typical % of the field Best Latest 
Indianapolis Motor Speedway286.1%86.1%Runoffs 202186.1%Runoffs 2021
Virginia International Raceway286.8%86.8%Runoffs 201996.1%Runoffs 2022
Daytona International Speedway189.4%89.4%Runoffs 201589.4%Runoffs 2015
Mid-Ohio Sports Car Course190.0%90.0%Runoffs 201690.0%Runoffs 2016
Road America188.3%88.3%Runoffs 202088.3%Runoffs 2020
Sonoma Raceway187.6%87.6%Runoffs 201887.6%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 the field's best on the same day (every class that ran that day but the ones shown, each scaled by its usual pace against SM and averaged, with each shown class's own track character taken out, so one figure reads the same across years and tracks): the weather and the day cancel out, so one figure compares across years where lap times cannot, and across tracks too, since the class's own character at each track is taken out. A track with only one or two events on record is corrected less, since there is less to go on. A best from fewer than three cars is greyed. The rule changes that took effect between two events are folded between their rows.