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BoP Lab / Road America

PX pace at Road America

PX at every track →

Lap times across years say as much about the weather as the class. % of the field is each class's best lap as a share of the field's on the same day (every class that ran that day but the ones shown, each scaled by its usual pace against SM and averaged, with each shown class's own track character taken out, so one figure reads the same across years and tracks), 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)
Reference · what % is measured against, 2 eventsall classes that day, as if at an average track

Quickest here: PX 2:08.515 Judd Miller, June Sprints 2020 qualifying

2:082:102:122:142:16PX race best at June Sprints 2020: 2:10.496 (Judd Miller)PX qualifying best at June Sprints 2020: 2:08.515 (Judd Miller)PX qualifying best at June Sprints 2021: 2:16.070 (Jim Booth)June Sprints 2020June Sprints2020June Sprints 2021June Sprints2021
PXsolid race · dashed qualifying · slower is lower
80%81%82%83%84%PX race best at June Sprints 2020: 80.8% of Field's (Judd Miller)PX qualifying best at June Sprints 2020: 79.7% of Field's (Judd Miller)PX qualifying best at June Sprints 2021: 83.8% of Field's (Jim Booth)June Sprints 2020June Sprints2020June Sprints 2021June Sprints2021
PXsolid race · dashed qualifying · each class's best lap as a share of the field's at the same event (the field index, changeable above); 100% is level, less is quicker, so up the chart is quicker
EventPX
Qual best Race best Trap % of the field 
June Sprints 2021 ST21JUN042021-06-042:16.070Jim Booth · only car+7.555s (+5.88%)83.8% qual
No rule changes on record between these events
June Sprints 2020 ST20JUN122020-06-122:08.515Judd Miller · fastest of 22:10.496Judd Miller · fastest of 2166.2Conrad Park80.8%qual 79.7%
About this data
Best is the class's fastest lap in that event's qualifying or race sessions, with the driver who set it, how many cars set a time that session and how close the top five were; a best from fewer than three cars is greyed. With two or more classes, "vs" is the gap of each class's best to the first class's at the same event. "% of the field" is the class's best as a share of the field's at the same event: every class that ran that day but the ones shown, each scaled by its usual pace against SM and averaged, with each shown class's own track character taken out, so one figure reads the same across years and tracks (100% is level, less is quicker): weather and track condition move every class together, so this compares across years where the raw times do not. It still breaks when few classes ran or one session was wet and another dry. Newest event first. The coloured figure under each value is the change from the previous event that has one (green is quicker, red slower). Whole laps only, so events with different sector layouts still compare. Weather and track condition are not accounted for.