BoP Lab / Classes / F6
F6 vs FB vs FE vs FV 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 · FV 115.0% of F6 Andrew Abbott, Virginia International Raceway Runoffs 2023 race
| Event | F6 | FB | FE | FV | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Qual best | Race best | Trap | Qual best | Race best | Trap | vs F6 | % of F6 | Qual best | Race best | Trap | vs F6 | % of F6 | 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%) | 2:46.536Zachary 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%) | +25.017squal +28.047s | 117.8%qual 120.3% | ||||||||||||
2 rule changes (FE: 2)1 engine · 1 othershow | ||||||||||||||||||||
| Road America Runoffs 20252025-09-29 | 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%) | |||||||||||||||||
2 rule changes (FE: 2)1 suspension & brakes · 1 weightshow | ||||||||||||||||||||
| 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 | 2:42.643Andrew 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%) | +25.994squal +23.537s | 118.7%qual 116.9% | ||||||||||||
7 rule changes (FE: 5, FV: 2)3 tyres & wheels · 1 suspension & brakes · 1 wording · 2 othershow
| ||||||||||||||||||||
| 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 | 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%) | +17.795squal +18.202s | 115.0%qual 115.5% | ||||||||||||
3 rule changes (FE: 3)1 aero · 1 suspension & brakes · 1 othershow | ||||||||||||||||||||
| Virginia International Raceway Runoffs 20222022-09-24 | 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%) | |||||||||||||||||
8 rule changes (FE: 4, FV: 4)4 weight · 2 engine · 1 tyres & wheels · 1 othershow
| ||||||||||||||||||||
| Indianapolis Motor Speedway Runoffs 20212021-09-25 | 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 | |||||||||||||||||
| Road America Runoffs 20202020-10-02 | 2:43.994Hunter Phelps-Barron · fastest of 28 · top 5 within 0.6s | 2:45.816Alex Scaler · fastest of 24 · top 5 within 1.5s | 117.1Hunter Phelps-Barron | |||||||||||||||||
11 rule changes (FE: 5, FV: 6)6 tyres & wheels · 2 aero · 2 weight · 1 suspension & brakesshow
| ||||||||||||||||||||
| Virginia International Raceway Runoffs 20192019-10-05 | 1:54.469Pete Frost · only car | 1:57.688Pete Frost · only car | 145.9Pete Frost | 1:54.710Mark Snyder · fastest of 9 · top 5 within 1.3s | 1:55.648Mark Snyder · fastest of 9 · top 5 within 0.9s | 135.5James Libecco | 2:15.712Andrew Whitston · fastest of 26 · top 5 within 1.5s | 2:18.289Zachary Whitston · fastest of 19 · top 5 within 0.4s | 114.8Roger Siebenaler | |||||||||||
11 rule changes (FE: 5, FV: 6)4 tyres & wheels · 2 suspension & brakes · 1 induction · 4 othershow
| ||||||||||||||||||||
| Sonoma Raceway Runoffs 20182018-10-10 | 1:28.612J R Osborne · fastest of 7 · top 5 within 3.3s | 1:31.189J R Osborne · fastest of 7 · top 5 within 3.7s | 140.5J R Osborne | 1:37.517Mark Snyder · fastest of 10 · top 5 within 1.4s | 1:38.504Lee Rackley · fastest of 10 · top 5 within 0.8s | 124.7Quinten Nelson | 1:52.637Skip Streets · fastest of 29 · top 5 within 1.6s | 1:53.639Alex Scaler · fastest of 28 · top 5 within 0.4s | 106.3Skip Streets | |||||||||||
| No rule changes on record between these events | ||||||||||||||||||||
| Indianapolis Motor Speedway Runoffs 20172017-09-25 | 1:33.746Gary Hickman · fastest of 18 · top 5 within 3.3s | 1:33.702Alex Mayer · fastest of 17 · top 5 within 3.0s | 1:39.177Elliot Finlayson · fastest of 35 · top 5 within 1.3s | 1:39.726Elliot Finlayson · fastest of 35 · top 5 within 0.8s | 1:55.759Michael Varacins · fastest of 39 · top 5 within 1.0s | 1:55.923Michael Varacins · fastest of 32 · top 5 within 1.3s | ||||||||||||||
| No rule changes on record between these events | ||||||||||||||||||||
| Mid-Ohio Sports Car Course Runoffs 20162016-09-19 | 1:19.886Alex Mayer · fastest of 10 · top 5 within 1.5s | 1:21.015Jeremy Hill · fastest of 10 · top 5 within 1.2s | 1:27.636Scott Rettich · fastest of 9 · top 5 within 1.7s | 1:30.563Hanna Zellers · fastest of 9 · top 5 within 2.2s | 1:37.942Alex Scaler · fastest of 41 · top 5 within 0.3s | 1:38.066Flinn Lazier · fastest of 38 · top 5 within 0.7s | ||||||||||||||
| No rule changes on record between these events | ||||||||||||||||||||
| Daytona International Speedway Runoffs 20152015-09-21 | 1:50.711J R Osborne · fastest of 20 · top 5 within 1.1s | 1:51.616J R Osborne · fastest of 19 · top 5 within 2.1s | 1:57.824Scott Rettich · fastest of 16 · top 5 within 1.0s | 1:59.040Scott Rettich · fastest of 16 · top 5 within 1.3s | 2:21.167Roger Siebenaler · fastest of 31 · top 5 within 0.8s | 2:21.142Andrew Whitston · fastest of 30 · top 5 within 1.1s | ||||||||||||||
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 | 2 | 0 of 2 with F6 | ||
| Daytona International Speedway | 1 | 0 of 1 with F6 | ||
| Mid-Ohio Sports Car Course | 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.