BoP Lab / Classes / SPU

SPU vs SRF 3 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.

% of SPULap times

SPUSRF 3solid race · dashed qualifying · slower is lower

SPUSRF 3solid race · dashed qualifying · each class's best lap as a share of SPU's at the same event (the reference class, changeable above); 100% is level, less is quicker, so up the chart is quicker

	Event	SPU			SRF 3
	Event	Qual best	Race best	Trap	Qual best	Race best	Trap	vs SPU	% of SPU
	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
	Pittsburgh International Race Complex Majors May 20162016-05-14				2:06.800Scott Rettich · fastest of 13 · top 5 within 4.5s

By track

Track	Events	Typical % of SPU	Best	Latest
Michelin Raceway Road Atlanta	1	100.0%	100.0%SARRC 2020	100.0%SARRC 2020
Pittsburgh International Race Complex	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.