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BoP Lab / Classes / IT7

IT7 vs CTD pace at every track

Lap times across years say as much about the weather as the class. % of IT7 is each class's best lap as a share of IT7'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+vsCTD×EP+FA+FC+FE2+FF+FP+FV+FX+GT1+GT2+GTX+HP+IT7×P+P2+SM+SMX+SRF3+STL+STU+T1+T2+T3+T4+Show 49 inactive classes
Reference · what % is measured against
Tracks · untick to narrow
1:101:201:301:401:503 rule changes between Majors @ Pacific Raceway and SARRC 20203 ▾IT7 race best at Majors May 2016: 1:18.431 (Bill Meyer)IT7 race best at SARRC 2020: 1:53.468 (Alan Faver)IT7 qualifying best at Majors May 2016: 1:13.416 (Steven Burkett)IT7 qualifying best at SARRC 2020: 1:50.830 (Alan Faver)CTD qualifying best at Majors @ Pacific Raceway: 1:49.215 (Rick Shaw)Circuit of St. Louis (formerly Gateway Motorsports · Majors May 2016Majors May2016Pacific Raceways · Majors @ Pacific RacewayMajors @ Pacific Raceway2016Michelin Raceway Road Atlanta · SARRC 2020SARRC2020
IT7CTDsolid race · dashed qualifying · slower is lower
100%3 rule changes between Majors @ Pacific Raceway and SARRC 20203 ▾IT7 race best at Majors May 2016: 100.0% of IT7's (Bill Meyer)IT7 race best at SARRC 2020: 100.0% of IT7's (Alan Faver)IT7 qualifying best at Majors May 2016: 100.0% of IT7's (Steven Burkett)IT7 qualifying best at SARRC 2020: 100.0% of IT7's (Alan Faver)Circuit of St. Louis (formerly Gateway Motorsports · Majors May 2016Majors May2016Pacific Raceways · Majors @ Pacific RacewayMajors @ Pacific Raceway2016Michelin Raceway Road Atlanta · SARRC 2020SARRC2020
IT7CTDsolid race · dashed qualifying · each class's best lap as a share of IT7's at the same event (the reference class, changeable above); 100% is level, less is quicker, so up the chart is quicker
EventIT7CTD
Qual best Race best Trap Qual best Race best Trap vs IT7 % of IT7 
Michelin Raceway Road Atlanta SARRC 20202020-07-251:50.830Alan Faver · fastest of 21:53.468Alan Faver · fastest of 2106.4Martin Reiter
3 rule changes (IT7: 3)1 induction · 1 tyres & wheels · 1 weightshowhide
  • IT7 Cleanup 4.f Traction control #28609tyres & wheels
  • IT7 Request clarification 1999 Ford Escort ZX2 S?R #26966weight -45 lbs
  • IT7 Request clarification on 9.1.3 D1.A.2 #26237induction
Pacific Raceways Majors @ Pacific Raceway2016-05-281:49.215Rick Shaw · fastest of 2
No rule changes on record between these events
Circuit of St. Louis (formerly Gateway Motorsports Majors May 20162016-05-141:13.416Steven Burkett · fastest of 21:18.431Bill Meyer · only car

By track

TrackEvents Typical % of IT7 Best Latest 
Circuit of St. Louis (formerly Gateway Motorsports1100.0%100.0%Majors May 2016100.0%Majors May 2016
Michelin Raceway Road Atlanta1100.0%100.0%SARRC 2020100.0%SARRC 2020
Pacific Raceways10 of 1 with IT7
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 IT7'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.