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FB pace 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.

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AS+B-Spec+EP+FA+FB×FC+FE2+FF+FP+FV+FX+GT1+GT2+GTX+HP+P+P2+SM+SMX+SRF3+STL+STU+T1+T2+T3+T4+Show 50 inactive classes
Series
Reference · what % is measured against, 5 eventsall classes that day, as if at an average track
Tracks · untick to narrow

Closest to the field: FB 79.5% of the field J R Osborne, Sonoma Raceway Runoffs 2018 race

1:201:301:401:502:00FB race best at Runoffs 2015: 1:51.616 (J R Osborne)FB race best at Runoffs 2016: 1:21.015 (Jeremy Hill)FB race best at Runoffs 2017: 1:33.702 (Alex Mayer)FB race best at Runoffs 2018: 1:31.189 (J R Osborne)FB race best at Runoffs 2019: 1:57.688 (Pete Frost)FB qualifying best at Runoffs 2015: 1:50.711 (J R Osborne)FB qualifying best at Runoffs 2016: 1:19.886 (Alex Mayer)FB qualifying best at Runoffs 2017: 1:33.746 (Gary Hickman)FB qualifying best at Runoffs 2018: 1:28.612 (J R Osborne)FB qualifying best at Runoffs 2019: 1:54.469 (Pete Frost)Daytona International Speedway · Runoffs 2015Runoffs2015Mid-Ohio Sports Car Course · Runoffs 2016Runoffs2016Indianapolis Motor Speedway · Runoffs 2017Runoffs2017Sonoma Raceway · Runoffs 2018Runoffs2018Virginia International Raceway · Runoffs 2019Runoffs2019
FBsolid race · dashed qualifying · slower is lowerDaytona International SpeedwayIndianapolis Motor SpeedwayMid-Ohio Sports Car CourseSonoma RacewayVirginia International Raceway
79%80%81%82%83%84%85%86%FB race best at Runoffs 2015: 80.8% of Field's (J R Osborne)FB race best at Runoffs 2016: 79.8% of Field's (Jeremy Hill)FB race best at Runoffs 2017: 79.7% of Field's (Alex Mayer)FB race best at Runoffs 2018: 79.5% of Field's (J R Osborne)FB race best at Runoffs 2019: 85.9% of Field's (Pete Frost)FB qualifying best at Runoffs 2015: 80.9% of Field's (J R Osborne)FB qualifying best at Runoffs 2016: 79.7% of Field's (Alex Mayer)FB qualifying best at Runoffs 2017: 80.4% of Field's (Gary Hickman)FB qualifying best at Runoffs 2018: 80.3% of Field's (J R Osborne)FB qualifying best at Runoffs 2019: 85.7% of Field's (Pete Frost)Daytona International Speedway · Runoffs 2015Runoffs2015Mid-Ohio Sports Car Course · Runoffs 2016Runoffs2016Indianapolis Motor Speedway · Runoffs 2017Runoffs2017Sonoma Raceway · Runoffs 2018Runoffs2018Virginia International Raceway · Runoffs 2019Runoffs2019
FBsolid 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 quickerDaytona International SpeedwayIndianapolis Motor SpeedwayMid-Ohio Sports Car CourseSonoma RacewayVirginia International Raceway
EventFB
Qual best Race best Trap % of the field 
Virginia International Raceway Runoffs 20192019-10-051:54.469Pete Frost · only car1:57.688Pete Frost · only car145.9Pete Frost85.9%qual 85.7%
No rule changes on record between these events
Sonoma Raceway Runoffs 20182018-10-101:28.612J R Osborne · fastest of 7 · top 5 within 3.3s1:31.189J R Osborne · fastest of 7 · top 5 within 3.7s140.5J R Osborne79.5%qual 80.3%
No rule changes on record between these events
Indianapolis Motor Speedway Runoffs 20172017-09-251:33.746Gary Hickman · fastest of 18 · top 5 within 3.3s1:33.702Alex Mayer · fastest of 17 · top 5 within 3.0s79.7%qual 80.4%
No rule changes on record between these events
Mid-Ohio Sports Car Course Runoffs 20162016-09-191:19.886Alex Mayer · fastest of 10 · top 5 within 1.5s1:21.015Jeremy Hill · fastest of 10 · top 5 within 1.2s79.8%qual 79.7%
No rule changes on record between these events
Daytona International Speedway Runoffs 20152015-09-211:50.711J R Osborne · fastest of 20 · top 5 within 1.1s1:51.616J R Osborne · fastest of 19 · top 5 within 2.1s80.8%qual 80.9%

By track

TrackEvents Typical % of the field Best Latest 
Daytona International Speedway180.8%80.8%Runoffs 201580.8%Runoffs 2015
Indianapolis Motor Speedway179.7%79.7%Runoffs 201779.7%Runoffs 2017
Mid-Ohio Sports Car Course179.8%79.8%Runoffs 201679.8%Runoffs 2016
Sonoma Raceway179.5%79.5%Runoffs 201879.5%Runoffs 2018
Virginia International Raceway185.9%85.9%Runoffs 201985.9%Runoffs 2019
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 the field's best 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): the weather and the day cancel out, so one figure compares across years where lap times cannot, and across tracks too, since the class's own character at each track is taken out. A track with only one or two events on record is corrected less, since there is less to go on. A best from fewer than three cars is greyed. The rule changes that took effect between two events are folded between their rows.