BoP Labbeta

BoP Lab / Classes / PX

PX pace at every track

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

Class · click a class to switch, + to compare alongside (up to 4)
AS+B-Spec+EP+FA+FC+FE2+FF+FP+FV+FX+GT1+GT2+GTX+HP+P+P2+PX×SM+SMX+SRF3+STL+STU+T1+T2+T3+T4+Show 50 inactive classes
Reference class · the yardstick the % column and chart are measured against
Tracks · untick to narrow

Quickest here: PX 1:28.432 Jacek Mucha, Super Tour Mar 2021 race

1:301:401:502:002:102:20PX race best at Super Tour Jan 2020: 2:11.901 (Jacek Mucha)PX race best at Super Tour Feb 2020: 2:08.836 (Judd Miller)PX race best at June Sprints 2020: 2:10.496 (Judd Miller)PX race best at Super Tour Feb 2021: 1:53.181 (Robert Yallen)PX race best at Super Tour Mar 2021: 1:28.432 (Jacek Mucha)PX race best at Super Tour Apr 2021: 1:59.572 (Jacek Mucha)PX race best at Super Tour Feb 2022: 1:44.025 (Dave Tweedlie)PX qualifying best at Super Tour Jan 2020: 2:11.545 (Jacek Mucha)PX qualifying best at Super Tour Feb 2020: 2:11.851 (Judd Miller)PX qualifying best at June Sprints 2020: 2:08.515 (Judd Miller)PX qualifying best at Super Tour Mar 2021: 1:29.991 (Jacek Mucha)PX qualifying best at Super Tour Apr 2021: 2:03.668 (Jacek Mucha)PX qualifying best at June Sprints 2021: 2:16.070 (Jim Booth)PX qualifying best at Super Tour Feb 2022: 1:43.842 (Dave Tweedlie)Sebring International Raceway · Super Tour Jan 2020Super Tour Jan2020Circuit of the Americas · Super Tour Feb 2020Super Tour Feb2020Road America · June Sprints 2020June Sprints2020Buttonwillow Raceway Park · Super Tour Feb 2021Super Tour Feb2021Michelin Raceway Road Atlanta · Super Tour Mar 2021Super Tour Mar2021Virginia International Raceway · Super Tour Apr 2021Super Tour Apr2021Road America · June Sprints 2021June Sprints2021Buttonwillow Raceway Park · Super Tour Feb 2022Super Tour Feb2022
PXsolid race · dashed qualifying · slower is lowerButtonwillow Raceway ParkRoad AmericaCircuit of the AmericasMichelin Raceway Road AtlantaSebring International RacewayVirginia International Raceway
80%85%90%PX race best at Super Tour Jan 2020: 84.4% of SM's (Jacek Mucha)PX race best at Super Tour Feb 2020: 80.3% of SM's (Judd Miller)PX race best at June Sprints 2020: 80.7% of SM's (Judd Miller)PX race best at Super Tour Feb 2021: 88.4% of SM's (Robert Yallen)PX race best at Super Tour Mar 2021: 86.2% of SM's (Jacek Mucha)PX race best at Super Tour Apr 2021: 87.6% of SM's (Jacek Mucha)PX race best at Super Tour Feb 2022: 82.6% of SM's (Dave Tweedlie)PX qualifying best at Super Tour Jan 2020: 84.7% of SM's (Jacek Mucha)PX qualifying best at Super Tour Feb 2020: 82.9% of SM's (Judd Miller)PX qualifying best at June Sprints 2020: 79.3% of SM's (Judd Miller)PX qualifying best at Super Tour Mar 2021: 88.4% of SM's (Jacek Mucha)PX qualifying best at Super Tour Apr 2021: 91.5% of SM's (Jacek Mucha)PX qualifying best at June Sprints 2021: 83.0% of SM's (Jim Booth)PX qualifying best at Super Tour Feb 2022: 82.7% of SM's (Dave Tweedlie)Sebring International Raceway · Super Tour Jan 2020Super Tour Jan2020Circuit of the Americas · Super Tour Feb 2020Super Tour Feb2020Road America · June Sprints 2020June Sprints2020Buttonwillow Raceway Park · Super Tour Feb 2021Super Tour Feb2021Michelin Raceway Road Atlanta · Super Tour Mar 2021Super Tour Mar2021Virginia International Raceway · Super Tour Apr 2021Super Tour Apr2021Road America · June Sprints 2021June Sprints2021Buttonwillow Raceway Park · Super Tour Feb 2022Super Tour Feb2022
PXsolid race · dashed qualifying · each class's best lap as a share of SM's at the same event (the reference class, changeable above); 100% is level, less is quicker, so up the chart is quickerButtonwillow Raceway ParkRoad AmericaCircuit of the AmericasMichelin Raceway Road AtlantaSebring International RacewayVirginia International Raceway
EventPX
Qual bestRace bestTrap% of SM
Buttonwillow Raceway Park Super Tour Feb 20222022-02-171:43.842Dave Tweedlie · only car1:44.025Dave Tweedlie · only car-9.156s (-8.09%)132.0Dave Tweedlie-1.5 mph (-1.1%)82.6%qual 82.7%
No rule changes on record between these events
Road America June Sprints 20212021-06-042:16.070Jim Booth · only car+7.555s (+5.88%)83.0% qual
No rule changes on record between these events
Virginia International Raceway Super Tour Apr 20212021-04-092:03.668Jacek Mucha · only car1:59.572Jacek Mucha · only car168.1Jacek Mucha87.6%qual 91.5%
No rule changes on record between these events
Michelin Raceway Road Atlanta Super Tour Mar 20212021-03-191:29.991Jacek Mucha · only car1:28.432Jacek Mucha · only car171.7Jacek Mucha86.2%qual 88.4%
No rule changes on record between these events
Buttonwillow Raceway Park Super Tour Feb 20212021-02-191:53.181Robert Yallen · only car133.5Robert Yallen88.4%
No rule changes on record between these events
Road America June Sprints 20202020-06-122:08.515Judd Miller · fastest of 22:10.496Judd Miller · fastest of 2166.2Conrad Park80.7%qual 79.3%
No rule changes on record between these events
Circuit of the Americas Super Tour Feb 20202020-02-072:11.851Judd Miller · only car2:08.836Judd Miller · only car162.9Judd Miller80.3%qual 82.9%
No rule changes on record between these events
Sebring International Raceway Super Tour Jan 20202020-01-102:11.545Jacek Mucha · only car2:11.901Jacek Mucha · only car155.9Jacek Mucha84.4%qual 84.7%

By track

TrackEventsTypical % of SMBestLatest
Buttonwillow Raceway Park282.6%82.6%Super Tour Feb 202282.6%Super Tour Feb 2022
Road America280.7%80.7%June Sprints 202083.0%June Sprints 2021
Circuit of the Americas180.3%80.3%Super Tour Feb 202080.3%Super Tour Feb 2020
Michelin Raceway Road Atlanta186.2%86.2%Super Tour Mar 202186.2%Super Tour Mar 2021
Sebring International Raceway184.4%84.4%Super Tour Jan 202084.4%Super Tour Jan 2020
Virginia International Raceway187.6%87.6%Super Tour Apr 202187.6%Super Tour Apr 2021
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 SM's best on the same day: the weather, the track and its configuration cancel out, so one figure compares across tracks and years where lap times cannot. 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.