BoP Lab / Classes / F6
F6 vs FE2 pace at every track
Lap times across years say as much about the weather as the class. % of F6 is each class's best lap as a share of F6'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.
Closest to the field: F6 100.0% of F6 Calvin Stewart, Virginia International Raceway Runoffs 2023 race · FE2 93.5% of F6 Franklin Futrelle, Virginia International Raceway Runoffs 2023 race
| Event | F6 | FE2 | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Qual best | Race best | Trap | Qual best | Race best | Trap | vs F6 | % of F6 | |||
| Road America Runoffs 20262026-09-28 | 2:18.489Calvin Stewart · fastest of 13 · top 5 within 4.2s-0.617s (-0.44%) | 2:20.255James Weida · fastest of 13 · top 5 within 2.0s+1.415s (+1.02%) | 143.0Calvin Stewart-4.5 mph (-3.1%) | 2:12.326Franklin 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%) | -8.374squal -6.163s | 94.0%qual 95.5% | ||
1 rule change (FE2: 1)1 cars added · FE and FE2 Enterprise bubble tail part WM138014 now allowed; FE2 must use this configuration only.show
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| Road America Runoffs 20252025-09-29 | 2:12.475Franklin 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%) | |||||||
1 rule change (FE2: 1)1 other · FE2 allows pre-approved driver safety and comfort seat and control modifications for drivers with disabilities, per logbook.show
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| Road America Runoffs 20242024-10-01 | 2:19.106Calvin Stewart · fastest of 22 · top 5 within 1.3s | 2:18.840James Weida · fastest of 22 · top 5 within 1.0s | 147.6Calvin Stewart | 2:11.506Porter 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%) | -6.092squal -7.600s | 95.6%qual 94.5% | ||
| No rule changes on record between these events | ||||||||||
| Virginia International Raceway Runoffs 20232023-09-23 | 1:57.437Calvin Stewart · fastest of 9 · top 5 within 4.7s | 1:58.816Calvin Stewart · fastest of 9 · top 5 within 3.6s | 144.0Calvin Stewart | 1:50.665Charles 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%) | -7.718squal -6.772s | 93.5%qual 94.2% | ||
| No rule changes on record between these events | ||||||||||
| Virginia International Raceway Runoffs 20222022-09-24 | 1:50.853Charles 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%) | |||||||
| No rule changes on record between these events | ||||||||||
| Indianapolis Motor Speedway Runoffs 20212021-09-25 | 1:36.395Max Grau · fastest of 28 · top 5 within 0.7s | 1:36.655Max Grau · fastest of 28 · top 5 within 0.7s | 146.2Gray Fowler | |||||||
| No rule changes on record between these events | ||||||||||
| Road America Runoffs 20202020-10-02 | 2:12.806Scott Rettich · fastest of 25 · top 5 within 0.6s | 2:13.271Owen McAllister · fastest of 23 · top 5 within 0.7s | 143.4Owen McAllister | |||||||
2 rule changes (FE2: 2)1 weight · 1 wording · FE2 oil cooler rule clarified: Setrab 50-625-7612 or any cooler with max core 13 inches wide by 6.5 inches high allowed. · FE minimum weight rises to 1270 lbs; FE2 minimum weight rises to 1270 lbs; new spring options added; tire warmers prohibited.show
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| Virginia International Raceway Runoffs 20192019-10-05 | 1:51.062Liam Snyder · fastest of 20 · top 5 within 1.3s | 1:52.154Liam Snyder · fastest of 19 · top 5 within 0.7s | 142.6Robert Vanman | |||||||
| No rule changes on record between these events | ||||||||||
| Sonoma Raceway Runoffs 20182018-10-10 | 1:35.040Flinn Lazier · fastest of 9 · top 5 within 1.5s | 1:35.563Flinn Lazier · fastest of 9 · top 5 within 1.7s | 126.8Scott Rettich | |||||||
By track
| Track | Events | Typical % of F6 | Best | Latest |
|---|---|---|---|---|
| Road America | 4 | 100.0%2 of 4 with F6 | 100.0%Runoffs 2024 | 100.0%Runoffs 2026 |
| Virginia International Raceway | 3 | 100.0%1 of 3 with F6 | 100.0%Runoffs 2023 | 100.0%Runoffs 2023 |
| Indianapolis Motor Speedway | 1 | 0 of 1 with F6 | ||
| Sonoma Raceway | 1 | 0 of 1 with F6 |
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 F6'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.