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BoP Lab / Classes / S7

S7 vs ITB vs SRF 3 pace at every track

Lap times across years say as much about the weather as the class. % of S7 is each class's best lap as a share of S7'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+EP+FA+FC+FE2+FF+FP+FV+FX+GT1+GT2+GTX+HP+vsITB×P+P2+S7×SM+SMX+vsSRF 3×SRF3+STL+STU+T1+T2+T3+T4+Show 48 inactive classes
Reference · what % is measured against
Tracks · untick to narrow

Closest to the field: S7 100.0% of S7 Mark Miller, Pueblo Motorsports Park Majors May 2016 race

1:201:402:005 rule changes between Majors May 2016 and SARRC 20205 ▾S7 race best at Majors May 2016: 1:56.632 (Mark Miller)ITB race best at Majors May 2016: 1:15.234 (James Stevens)ITB race best at SARRC 2020: 2:00.725 (Ron Fuller)ITB qualifying best at Majors May 2016: 1:14.498 (James Stevens)ITB qualifying best at SARRC 2020: 1:59.654 (Ron Fuller)SRF 3 qualifying best at Majors May 2016: 2:06.800 (Scott Rettich)Circuit of St. Louis (formerly Gateway Motorsports · Majors May 2016Majors May2016Pittsburgh International Race Complex · Majors May 2016Majors May2016Pueblo Motorsports Park · Majors May 2016Majors May2016Michelin Raceway Road Atlanta · SARRC 2020SARRC2020
S7ITBSRF 3solid race · dashed qualifying · slower is lower
100%5 rule changes between Majors May 2016 and SARRC 20205 ▾S7 race best at Majors May 2016: 100.0% of S7's (Mark Miller)Circuit of St. Louis (formerly Gateway Motorsports · Majors May 2016Majors May2016Pittsburgh International Race Complex · Majors May 2016Majors May2016Pueblo Motorsports Park · Majors May 2016Majors May2016Michelin Raceway Road Atlanta · SARRC 2020SARRC2020
S7ITBSRF 3solid race · dashed qualifying · each class's best lap as a share of S7's at the same event (the reference class, changeable above); 100% is level, less is quicker, so up the chart is quicker
EventS7ITBSRF 3
Qual best Race best Trap Qual best Race best Trap vs S7 % of S7 Qual best Race best Trap vs S7 % of S7 
Michelin Raceway Road Atlanta SARRC 20202020-07-251:59.654Ron Fuller · only car2:00.725Ron Fuller · only car98.0Ron Fuller
5 rule changes (ITB: 5)2 weight · 1 cars added · 1 induction · 1 tyres & wheelsshowhide
  • ITB Cleanup 4.f Traction control #28609tyres & wheels
  • ITB Request clarification 1999 Ford Escort ZX2 S?R #26966weight -45 lbs
  • ITB Request to allow 07-11 Mini in ITB as BPSEC configuration #26997weight
  • ITB Request clarification on 9.1.3 D1.A.2 #26237induction
  • ITB Request to Dual-Class Honda Fit and B-Spec Cars Into ITC and #25347cars added
Pueblo Motorsports Park Majors May 20162016-05-281:56.632Mark Miller · fastest of 4 · top 4 within 12.3s
No rule changes on record between these events
Pittsburgh International Race Complex Majors May 20162016-05-142:06.800Scott Rettich · fastest of 13 · top 5 within 4.5s
No rule changes on record between these events
Circuit of St. Louis (formerly Gateway Motorsports Majors May 20162016-05-141:14.498James Stevens · fastest of 3 · top 3 within 4.4s1:15.234James Stevens · fastest of 3 · top 3 within 2.1s

By track

TrackEvents Typical % of S7 Best Latest 
Circuit of St. Louis (formerly Gateway Motorsports10 of 1 with S7
Michelin Raceway Road Atlanta10 of 1 with S7
Pittsburgh International Race Complex10 of 1 with S7
Pueblo Motorsports Park1100.0%100.0%Majors May 2016100.0%Majors May 2016
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 S7'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.