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BoP Lab / Classes / SMSE

SMSE vs BSpec pace at every track

Lap times across years say as much about the weather as the class. % of SMSE is each class's best lap as a share of SMSE'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.

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AS+B-Spec+vsBSpec×EP+F600+FA+FC+FE2+FF+FP+FV+FX+GT1+GT2+GTX+HP+P+P2+SM+SMSE×SMX+SRF3+STL+STU+T1+T2+T3+T4+Show 176 inactive classes
Reference · what % is measured against
Tracks · untick to narrow

Closest to the field: SMSE 100.0% of SMSE Frederick Baker, Michelin Raceway Road Atlanta SARRC 2020 race

1:201:402:002:20SMSE race best at SARRC 2020: 1:48.433 (Frederick Baker)SMSE race best at Southeast 2026: 1:52.381 (Frederick L Baker)SMSE race best at Southeast SARRC 2026: 1:24.608 (James Brown)SMSE qualifying best at SARRC 2020: 1:47.184 (Frederick Baker)BSpec race best at Majors Apr 2016: 2:28.161 (Felix Borodaty)BSpec race best at @Mid Ohio Sports Car Course 2016: 1:45.784 (Ted Sahley)BSpec qualifying best at Majors Apr 2016: 2:27.873 (Felix Borodaty)BSpec qualifying best at Majors May 2016: 1:16.860 (David Daughtery)BSpec qualifying best at @Mid Ohio Sports Car Course 2016: 1:48.451 (John Heinricy)Virginia International Raceway · Majors Apr 2016Majors Apr2016Circuit of St. Louis (formerly Gateway Motorsports · Majors May 2016Majors May2016Mid-Ohio Sports Car Course · @Mid Ohio Sports Car Course 2016@Mid Ohio Sports Car Course2016Michelin Raceway Road Atlanta · SARRC 2020SARRC2020Carolina Motorsports Park · Southeast 2026Southeast2026Roebling Road · Southeast SARRC 2026Southeast SARRC2026
SMSEBSpecsolid race · dashed qualifying · slower is lower
100%SMSE race best at SARRC 2020: 100.0% of SMSE's (Frederick Baker)SMSE race best at Southeast 2026: 100.0% of SMSE's (Frederick L Baker)SMSE race best at Southeast SARRC 2026: 100.0% of SMSE's (James Brown)SMSE qualifying best at SARRC 2020: 100.0% of SMSE's (Frederick Baker)Virginia International Raceway · Majors Apr 2016Majors Apr2016Circuit of St. Louis (formerly Gateway Motorsports · Majors May 2016Majors May2016Mid-Ohio Sports Car Course · @Mid Ohio Sports Car Course 2016@Mid Ohio Sports Car Course2016Michelin Raceway Road Atlanta · SARRC 2020SARRC2020Carolina Motorsports Park · Southeast 2026Southeast2026Roebling Road · Southeast SARRC 2026Southeast SARRC2026
SMSEBSpecsolid race · dashed qualifying · each class's best lap as a share of SMSE's at the same event (the reference class, changeable above); 100% is level, less is quicker, so up the chart is quicker
EventSMSEBSpec
Qual best Race best Trap Qual best Race best Trap vs SMSE % of SMSE 
Roebling Road Southeast SARRC 2026results only2026-06-271:24.608James Brown · fastest of 3 · top 3 within 0.8s
No rule changes on record between these events
Carolina Motorsports Park Southeast 2026results only2026-05-231:52.381Frederick L Baker · fastest of 3 · top 3 within 0.9s
No rule changes on record between these events
Michelin Raceway Road Atlanta SARRC 20202020-07-251:47.184Frederick Baker · fastest of 4 · top 4 within 4.9s1:48.433Frederick Baker · fastest of 4 · top 4 within 6.3s107.4Ken Steagall
No rule changes on record between these events
Mid-Ohio Sports Car Course @Mid Ohio Sports Car Course 20162016-06-031:48.451John Heinricy · fastest of 8 · top 5 within 1.1s1:45.784Ted 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 20162016-05-141:16.860David Daughtery · fastest of 2
No rule changes on record between these events
Virginia International Raceway Majors Apr 20162016-04-152:27.873Felix Borodaty · fastest of 3 · top 3 within 6.6s2:28.161Felix Borodaty · fastest of 3 · top 3 within 8.0s

By track

TrackEvents Typical % of SMSE Best Latest 
Carolina Motorsports Park1100.0%100.0%Southeast 2026100.0%Southeast 2026
Circuit of St. Louis (formerly Gateway Motorsports10 of 1 with SMSE
Michelin Raceway Road Atlanta1100.0%100.0%SARRC 2020100.0%SARRC 2020
Mid-Ohio Sports Car Course10 of 1 with SMSE
Roebling Road1100.0%100.0%Southeast SARRC 2026100.0%Southeast SARRC 2026
Virginia International Raceway10 of 1 with SMSE
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 SMSE'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.