BoP Lab / Classes / SPU
SPU vs BSpec vs SSM vs F1000 pace at every track
Lap times across years say as much about the weather as the class. % of SPU is each class's best lap as a share of SPU'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: SPU 100.0% of SPU Rick Gough, Pacific Raceways Northwest Pacific Grand Prix 2026 race
| Event | SPU | BSpec | SSM | F1000 | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Qual best | Race best | Trap | Qual best | Race best | Trap | vs SPU | % of SPU | Qual best | Race best | Trap | vs SPU | % of SPU | Qual best | Race best | Trap | vs SPU | % of SPU | |||
| Pacific Raceways Northwest Pacific Grand Prix 2026results only2026-05-23 | 1:34.122Rick Gough · fastest of 3 · top 3 within 8.4s | |||||||||||||||||||
| No rule changes on record between these events | ||||||||||||||||||||
| Thunderhill Raceway Park Majors Apr 2026results only2026-04-25 | 2:16.441James Powell · fastest of 2 | |||||||||||||||||||
| No rule changes on record between these events | ||||||||||||||||||||
| Michelin Raceway Road Atlanta SARRC 20202020-07-25 | 1:47.450Randy Hutchings · only car | 1:43.713Ricky Sanders · fastest of 2 | 119.9Ricky Sanders | |||||||||||||||||
| No rule changes on record between these events | ||||||||||||||||||||
| Mid-Ohio Sports Car Course @Mid Ohio Sports Car Course 20162016-06-03 | 1:48.451John Heinricy · fastest of 8 · top 5 within 1.1s | 1:45.784Ted Sahley · fastest of 9 · top 5 within 3.1s | ||||||||||||||||||
| No rule changes on record between these events | ||||||||||||||||||||
| Circuit of St. Louis (formerly Gateway Motorsports Majors May 20162016-05-14 | 1:16.860David Daughtery · fastest of 2 | |||||||||||||||||||
| No rule changes on record between these events | ||||||||||||||||||||
| Summit Point Raceway Majors Apr 20162016-04-29 | 1:31.569Alan Olson · fastest of 26 · top 5 within 1.9s | 1:29.237Kevin Kopp · fastest of 27 · top 5 within 0.3s | ||||||||||||||||||
| No rule changes on record between these events | ||||||||||||||||||||
| Virginia International Raceway Majors Apr 20162016-04-15 | 2:27.873Felix Borodaty · fastest of 3 · top 3 within 6.6s | 2:28.161Felix Borodaty · fastest of 3 · top 3 within 8.0s | ||||||||||||||||||
| No rule changes on record between these events | ||||||||||||||||||||
| Auto Club Speedway Majors Jan 20162016-01-29 | 1:35.410Gary Hickman · fastest of 2 | 1:36.284Gary Hickman · fastest of 2 | ||||||||||||||||||
By track
| Track | Events | Typical % of SPU | Best | Latest |
|---|---|---|---|---|
| Auto Club Speedway | 1 | 0 of 1 with SPU | ||
| Circuit of St. Louis (formerly Gateway Motorsports | 1 | 0 of 1 with SPU | ||
| Michelin Raceway Road Atlanta | 1 | 100.0% | 100.0%SARRC 2020 | 100.0%SARRC 2020 |
| Mid-Ohio Sports Car Course | 1 | 0 of 1 with SPU | ||
| Pacific Raceways | 1 | 100.0% | 100.0%Northwest Pacific Grand Prix 2026 | 100.0%Northwest Pacific Grand Prix 2026 |
| Summit Point Raceway | 1 | 0 of 1 with SPU | ||
| Thunderhill Raceway Park | 1 | 0 of 1 with SPU | ||
| Virginia International Raceway | 1 | 0 of 1 with SPU |
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 SPU'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.