BoP Lab / Drivers / Jeffrey Lederman
| Track | Class | Sessions | Typical gap to class best | Closest |
|---|---|---|---|---|
| Portland International Raceway (1.97 mi) | P1 | 8 | +1.918s (2.81%) | +1.449s (2.08%) |
| Road America (4.05 mi) | P1 | 18 | +5.644s (4.67%) | +4.003s (3.29%) |
| Unknown track (4.05 mi) | P1 | 5 | +9.436s (7.71%) | +2.628s (2.10%) |
| Road America | P1 | 1 | ||
| Circuit of the Americas (3.41 mi) | P1 | 4 | +6.169s (4.95%) | +4.489s (3.59%) |
| Sebring International Raceway (3.74 mi) | P1 | 5 | +9.406s (7.24%) | +8.098s (6.74%) |
| Laguna Seca (2.24 mi) | P1 | 5 | +2.270s (2.77%) | +2.150s (2.58%) |
| Buttonwillow Raceway Park (2.92 mi) | P1 | 4 | +3.938s (3.98%) | +2.853s (2.83%) |
| Buttonwillow Raceway Park | P1 | 1 | ||
| Sonoma Raceway (2.52 mi) | P1 | 3 | +2.616s (2.94%) | +1.781s (2.01%) |
| Unknown track (2.52 mi) | P1 | 6 | +3.560s (3.93%) | +0.000s (0.00%) |
Gap is the driver's best lap in a session against the fastest lap in their class in that same session (zero is fastest in class), shown as time lost and as a share of the lap, so conditions cancel out and tracks can be compared. Typical is the median session.
| Event | Session | Class | # | Car | Pos | Best lap | Class best | To class best | Trap | Class trap | To class trap |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Oregon Region Hoosier SCCA Super Tour @ Portland International Raceway | Grp 1 FA FC FE2 FX P1 P2 Race 2 | P1 | 55 | Stohr WF1 | 3/3 | 1:09.773 | 1:07.644Chip Romer | +2.129s (3.15%) | 146.33/3 | 147.9Chip Romer | -1.6 mph (-1.1%) |
| Oregon Region Hoosier SCCA Super Tour @ Portland International Raceway | Grp 1 FA FC FE2 FX P1 P2 Qual 2 | P1 | 55 | Stohr WF1 | 3/3 | 1:10.421 | 1:07.480Chip Romer | +2.941s (4.36%) | 145.03/3 | 148.1Chip Romer | -3.2 mph (-2.1%) |
| Oregon Region Hoosier SCCA Super Tour @ Portland International Raceway | Grp 1 FA FC FE2 FX P1 P2 Race 1 | P1 | 55 | Stohr WF1 | 3/3 | 1:10.441 | 1:08.775Chip Romer | +1.666s (2.42%) | 145.52/3 | 147.1Chip Romer | -1.6 mph (-1.1%) |
| Oregon Region Hoosier SCCA Super Tour @ Portland International Raceway | Grp 1 FA FC FE2 FX P1 P2 Qual 1 | P1 | 55 | Stohr WF1 | 3/3 | 1:10.118 | 1:08.200Matthew Romer | +1.918s (2.81%) | 145.03/3 | 147.9Chip Romer | -2.9 mph (-2.0%) |
| Oregon Region Hoosier SCCA Super Tour @ Portland International Raceway | Grp 3 FA,FC,FE2,FX,P1,P2 Race 2 | P1 | 55 | Stohr WF1 Conversion | 5/5 | 1:11.439 | 1:09.052Chip Romer | +2.387s (3.46%) | |||
| Oregon Region Hoosier SCCA Super Tour @ Portland International Raceway | Grp 3 FA,FC,FE2,FX,P1,P2 Qual 2 | P1 | 55 | Stohr WF1 Conversion | 2/5 | 1:10.987 | 1:09.488Chip Romer | +1.499s (2.16%) | |||
| Oregon Region Hoosier SCCA Super Tour @ Portland International Raceway | Grp 3 FA,FC,FE2,FX,P1,P2 Race 1 | P1 | 55 | Stohr WF1 Conversion | 2/5 | 1:11.088 | 1:09.639Chip Romer | +1.449s (2.08%) | |||
| Oregon Region Hoosier SCCA Super Tour @ Portland International Raceway | Grp 3 FA,FC,FE2,FX,P1,P2 Qual 1 | P1 | 55 | Stohr WF1 Conversion | 3/4 | 1:11.022 | 1:08.837Chip Romer | +2.185s (3.17%) |
| Event | Session | Class | # | Car | Pos | Best lap | Class best | To class best | Trap | Class trap | To class trap |
|---|---|---|---|---|---|---|---|---|---|---|---|
| June Sprints 2023 | Grp 7 FE2,P1,P2 Race 2 | P1 | 55 | Stohr WF-1 | 12/9 | 2:15.994Jason Miller | |||||
| June Sprints 2023 | Grp 7 FE2,P1,P2 Race 1 | P1 | 55 | Stohr WF-1 | 8/13 | 2:10.454 | 2:02.983Lee Alexander | +7.471s (6.07%) | 150.011/13 | 156.3John Mcaleer | -6.3 mph (-4.0%) |
| June Sprints 2023 | Grp 7 FE2,P1,P2 Qual 2 | P1 | 55 | Stohr WF-1 | 9/14 | 2:06.810 | 2:00.559Lee Alexander | +6.251s (5.19%) | 153.78/14 | 158.5Jason Miller | -4.8 mph (-3.0%) |
| June Sprints 2023 | Grp 7 FE2,P1,P2 Qual 1 | P1 | 55 | Stohr WF-1 | 9/14 | 2:07.166 | 2:02.619Todd Vanacore | +4.547s (3.71%) | 151.410/14 | 156.6Brian French | -5.2 mph (-3.3%) |
| June Sprints 2022 | Grp 4 FA,P1,P2,PX Race 2 | P1 | 55 | Stohr WF1 | 3/9 | 2:09.260 | 2:02.214Chip Romer | +7.046s (5.77%) | 152.59/9 | 156.9Greg Case | -4.4 mph (-2.8%) |
| June Sprints 2022 | Grp 4 FA,P1,P2,PX Race 1 | P1 | 55 | Stohr WF1 | 8/10 | 2:09.347 | 2:01.877Todd Slusher | +7.470s (6.13%) | 149.78/8 | 155.7Todd Slusher | -6.0 mph (-3.8%) |
| June Sprints 2022 | Grp 4 FA,P1,P2,PX Qual 2 | P1 | 55 | Stohr WF1 | 8/9 | 2:06.623 | 2:00.979Chip Romer | +5.644s (4.67%) | 150.08/9 | 158.5Brian French | -8.4 mph (-5.3%) |
| June Sprints 2022 | Grp 4 FA,P1,P2,PX Qual 1 | P1 | 55 | Stohr WF1 | 7/10 | 2:08.231 | 2:02.450Chip Romer | +5.781s (4.72%) | |||
| June Sprints 2022 | Grp 4 FA,P1,P2,PX Prac | P1 | 55 | Stohr WF1 | 8/8 | 2:08.598 | 2:01.590Chip Romer | +7.008s (5.76%) | |||
| Runoffs 2020 | P1 Race | P1 | 155 | Stohr WF1 | 12/17 | 2:07.448 | 2:01.870James French | +5.578s (4.58%) | 154.66/17 | 159.7David Locke | -5.1 mph (-3.2%) |
| Runoffs 2020 | P1,P2 Qual 3 | P1 | 155 | Stohr WF1 | 12/18 | 2:06.187 | 2:01.101James French | +5.086s (4.20%) | 150.612/18 | 158.5Chip Romer | -7.9 mph (-5.0%) |
| Runoffs 2020 | P1,P2 Qual 2 | P1 | 155 | Stohr WF1 | 17/16 | 2:01.498Jean-Luc Liverato | |||||
| Runoffs 2020 | P1,P2 Qual 1 | P1 | 155 | Stohr WF1 | 11/16 | 2:09.362 | 2:02.437Jean-Luc Liverato | +6.925s (5.66%) | 150.010/16 | 158.5Chip Romer | -8.4 mph (-5.3%) |
| Chicago Region Hoosier SCCA Super Tour @ Road America | Grp 8 FA,P1,PX Race 2 | P1 | 155 | Stohr WF1 Conversion | 6/9 | 2:09.205 | 2:02.760James French | +6.445s (5.25%) | 154.35/9 | 158.5Greg Case | -4.2 mph (-2.6%) |
| Chicago Region Hoosier SCCA Super Tour @ Road America | Grp 8 FA,P1,PX Race 1 | P1 | 155 | Stohr WF1 Conversion | 9/10 | 2:07.119 | 2:02.887Todd Vanacore | +4.232s (3.44%) | 152.87/10 | 157.2Greg Case | -4.4 mph (-2.8%) |
| Chicago Region Hoosier SCCA Super Tour @ Road America | Grp 8 FA,P1,PX Qual 2 | P1 | 155 | Stohr WF1 Conversion | 10/10 | 2:06.584 | 2:01.256Todd Vanacore | +5.328s (4.39%) | 153.74/10 | 155.7Greg Case | -2.0 mph (-1.3%) |
| Chicago Region Hoosier SCCA Super Tour @ Road America | Grp 8 FA,P1,PX Qual 1 | P1 | 155 | Stohr WF1 Conversion | 10/11 | 2:05.804 | 2:01.801Todd Vanacore | +4.003s (3.29%) | 152.86/11 | 157.8Greg Case | -5.0 mph (-3.2%) |
| Chicago Region Hoosier SCCA Super Tour @ Road America | Grp 8 FA,P1,PX Practice | P1 | 155 | Stohr WF1 Conversion | 8/10 | 2:07.460 | 2:01.963Todd Vanacore | +5.497s (4.51%) | 154.32/10 | 156.9Greg Case | -2.7 mph (-1.7%) |
| Event | Session | Class | # | Car | Pos | Best lap | Class best | To class best | Trap | Class trap | To class trap |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Runoffs 2020 | Grp 6 Run 3 FA,FC,FE2,FX,P1,P2 | P1 | 155 | Stohr WF1 | 6/9 | 2:11.777 | 2:02.341Jean-Luc Liverato | +9.436s (7.71%) | 152.55/9 | 160.9Chip Romer | -8.4 mph (-5.2%) |
| Runoffs 2020 | Grp 6 Run 2 FA,FC,FE2,FX,P1,P2 | P1 | 155 | Stohr WF1 | 4/10 | 2:07.634 | 2:05.006Chip Romer | +2.628s (2.10%) | 152.85/10 | 160.9Chip Romer | -8.1 mph (-5.0%) |
| Runoffs 2020 | Grp 6 Run 1 FA,FC,FE2,FX,P1,P2 | P1 | 155 | Stohr WF1 | 6/8 | 2:10.107 | 2:03.825Chip Romer | +6.282s (5.07%) | 154.04/8 | 162.5Chip Romer | -8.6 mph (-5.3%) |
| Runoffs 2020 | Grp 4 Run 3 FA,FC,FE2,FX,P1,P2 | P1 | 155 | Stohr WF1 | 8/11 | 2:13.998 | 2:01.904Chip Romer | +12.094s (9.92%) | 145.210/11 | 158.1Chip Romer | -12.9 mph (-8.2%) |
| Runoffs 2020 | Grp 4 Run 1 FA,FC,FE2,FX,P1,P2 | P1 | 155 | Stohr WF1 | 7/9 | 4:08.865 | 2:39.135Jean-Luc Liverato | +89.730s (56.39%) | 89.77/9 | 134.7Jason Miller | -44.9 mph (-33.4%) |
| Event | Session | Class | # | Car | Pos | Best lap | Class best | To class best | Trap | Class trap | To class trap |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Chicago Region Hoosier SCCA Super Tour @ Road America | Warm Up | P1 | 155 | Stohr WF1 Conversion | 3 |
| Event | Session | Class | # | Car | Pos | Best lap | Class best | To class best | Trap | Class trap | To class trap |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Lone Star Region Hoosier SCCA Super Tour @ Circuit of the Americas | Grp 4 FA,P1,P2,FE2,FX Race 2 | P1 | 155 | Stohr WF1 Conversion | 6/7 | 2:44.446 | 2:34.819Chip Romer | +9.627s (6.22%) | 125.97/7 | 143.1William Munholland | -17.2 mph (-12.0%) |
| Lone Star Region Hoosier SCCA Super Tour @ Circuit of the Americas | Grp 4 FA,P1,P2,FE2,FX Qual 2 | P1 | 155 | Stohr WF1 Conversion | 5/5 | 3:06.098 | 2:26.667Chip Romer | +39.431s (26.88%) | 114.95/5 | 144.0Chip Romer | -29.1 mph (-20.2%) |
| Lone Star Region Hoosier SCCA Super Tour @ Circuit of the Americas | Grp 4 FA,P1,P2,FE2,FX Race 1 | P1 | 155 | Stohr WF1 Conversion | 4/7 | 2:09.620 | 2:05.131John Mcaleer | +4.489s (3.59%) | 153.21/7 | 153.2you | +0.0 mph (0.0%) |
| Lone Star Region Hoosier SCCA Super Tour @ Circuit of the Americas | Grp 4 FA,P1,P2,FE2,FX Qual 1 | P1 | 155 | Stohr WF1 Conversion | 4/7 | 2:10.869 | 2:04.700Chip Romer | +6.169s (4.95%) | 152.21/7 | 152.2Chip Romer | +0.0 mph (0.0%) |
| Event | Session | Class | # | Car | Pos | Best lap | Class best | To class best | Trap | Class trap | To class trap |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Central Florida Region Hoosier SCCA Super Tour @ Sebring International Raceway | Grp 6 FA,FC,FE2,FX,P1,P2 Race 2 | P1 | 155 | Stohr WF1 | 3/5 | 2:09.693 | 2:00.848Darryl Shoff | +8.845s (7.32%) | 140.32/5 | 142.2Todd Vanacore | -1.9 mph (-1.4%) |
| Central Florida Region Hoosier SCCA Super Tour @ Sebring International Raceway | Grp 6 FA,FC,FE2,FX,P1,P2 Race 1 | P1 | 155 | Stohr WF1 | 6/7 | 2:09.072 | 2:00.895Darryl Shoff | +8.177s (6.76%) | 140.62/7 | 141.3Todd Vanacore | -0.7 mph (-0.5%) |
| Central Florida Region Hoosier SCCA Super Tour @ Sebring International Raceway | Grp 6 FA,FC,FE2,FX,P1,P2 Qual 2 | P1 | 155 | Stohr WF1 | 4/6 | 2:19.359 | 2:09.953Darryl Shoff | +9.406s (7.24%) | 139.11/6 | 139.1you | +0.0 mph (0.0%) |
| Central Florida Region Hoosier SCCA Super Tour @ Sebring International Raceway | Grp 6 FA,FC,FE2,FX,P1,P2 Qual 1 | P1 | 155 | Stohr WF1 | 5/7 | 2:08.210 | 2:00.112Darryl Shoff | +8.098s (6.74%) | 142.02/7 | 142.5Todd Vanacore | -0.5 mph (-0.3%) |
| Central Florida Region Hoosier SCCA Super Tour @ Sebring International Raceway | Grp 6 FA,FC,FE2,FX,P1,P2 Practice | P1 | 155 | Stohr WF1 (2004) | 6/7 | 2:12.258 | 2:00.784Darryl Shoff | +11.474s (9.50%) | 141.52/7 | 142.7Todd Vanacore | -1.2 mph (-0.9%) |
| Event | Session | Class | # | Car | Pos | Best lap | Class best | To class best | Trap | Class trap | To class trap |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Hoosier SCCA Super Tour (San Francisco Region) | Grp 5 FB,FC,FE,FE2,P1,P2 Race 2 | P1 | 55 | Stohr WF1 Conversion | 4/5 | 1:24.335 | 1:22.065Todd Slusher | +2.270s (2.77%) | 120.72/5 | 121.3John Manfroy | -0.6 mph (-0.5%) |
| Hoosier SCCA Super Tour (San Francisco Region) | Grp 5 FB,FC,FE,FE2,P1,P2 Race 1 | P1 | 55 | Stohr WF1 Conversion | 3/6 | 1:24.941 | 1:21.922Todd Slusher | +3.019s (3.69%) | 120.42/6 | 121.3John Manfroy | -0.9 mph (-0.7%) |
| Hoosier SCCA Super Tour (San Francisco Region) | Grp 5,8 FA,M,B,C,E,E2,P1,2 Qual 2 | P1 | 55 | Stohr WF1 Conversion | 4/5 | 1:25.363 | 1:22.017Todd Slusher | +3.346s (4.08%) | 121.02/5 | 121.3John Manfroy | -0.3 mph (-0.2%) |
| Hoosier SCCA Super Tour (San Francisco Region) | Grp 5 FB,FC,FE,FE2,P1,P2 Qual 1 | P1 | 55 | Stohr WF1 Conversion | 4/6 | 1:23.877 | 1:21.626Jim Devenport | +2.251s (2.76%) | |||
| Hoosier SCCA Super Tour (San Francisco Region) | Grp 5,8 FA,M,B,C,E,E2,P1,2 Prac | P1 | 55 | Stohr WF1 Conversion | 4/4 | 1:25.633 | 1:23.483Jim Devenport | +2.150s (2.58%) |
| Event | Session | Class | # | Car | Pos | Best lap | Class best | To class best | Trap | Class trap | To class trap |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Hoosier SCCA Super Tour (Cal Club Region) | Grp 3 FA,FB,FE,FE2,P1,P2, Race 2 | P1 | 55 | Stohr WF1 | 2/3 | 1:42.794 | 1:38.856Jim Devenport | +3.938s (3.98%) | 133.51/3 | 133.5you | +0.0 mph (0.0%) |
| Hoosier SCCA Super Tour (Cal Club Region) | Grp 3 FA,FB,FE,FE2,P1,P2,FM Race 1 | P1 | 55 | Stohr WF1 | 2/3 | 1:43.552 | 1:40.699Jim Devenport | +2.853s (2.83%) | 131.41/3 | 131.4you | +0.0 mph (0.0%) |
| Hoosier SCCA Super Tour (Cal Club Region) | Grp 3 FA,FB,FE,FE2,P1,P2,FM Qual 2 | P1 | 55 | Stohr WF1 | 2/3 | 1:42.200 | 1:37.658Jim Devenport | +4.542s (4.65%) | 133.51/3 | 133.5you | +0.0 mph (0.0%) |
| Hoosier SCCA Super Tour (Cal Club Region) | Grp 3 FA,FB,FE,FE2,P1,P2 Prac | P1 | 55 | Stohr WF1 | 2/2 | 1:42.943 | 1:38.818Jim Devenport | +4.125s (4.17%) | 132.91/2 | 132.9you | +0.0 mph (0.0%) |
| Event | Session | Class | # | Car | Pos | Best lap | Class best | To class best | Trap | Class trap | To class trap |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Hoosier SCCA Super Tour (Cal Club Region) | Grp 3 FA,FB,FE,FE2,P1,P2 Qual 1 | P1 | 55 | Stohr WF1 | 3 |
| Event | Session | Class | # | Car | Pos | Best lap | Class best | To class best | Trap | Class trap | To class trap |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Runoffs 2018 | P1 Race | P1 | 55 | Stohr WF1 | 6/19 | 1:30.567 | 1:28.786Perry Richardson | +1.781s (2.01%) | 137.36/19 | 144.0Johnnie Crean | -6.7 mph (-4.7%) |
| Runoffs 2018 | P1/P2 Qual 2 | P1 | 55 | Stohr WF1 | 5/15 | 1:31.707 | 1:29.091Todd Slusher | +2.616s (2.94%) | 129.96/15 | 135.9Jim Devenport | -6.0 mph (-4.4%) |
| Runoffs 2018 | P1/P2 Qual 1 | P1 | 55 | Stohr WF1 | 8/19 | 1:30.851 | 1:27.714Todd Slusher | +3.137s (3.58%) | 130.813/19 | 141.7John Manfroy | -10.8 mph (-7.6%) |
| Event | Session | Class | # | Car | Pos | Best lap | Class best | To class best | Trap | Class trap | To class trap |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Runoffs 2018 | Mon Grp 4 Run 3 | P1 | 55 | Stohr WF1 | 5/8 | 1:32.432 | 1:31.152Chip Romer | +1.280s (1.40%) | |||
| Runoffs 2018 | Mon Grp 4 Run 2 | P1 | 55 | Stohr WF1 | 6/9 | 1:34.073 | 1:30.513Parker Nicklin | +3.560s (3.93%) | |||
| Runoffs 2018 | Mon Grp 4 Run 1 | P1 | 55 | Stohr WF1 | 8/7 | 5.032Parker Nicklin | |||||
| Runoffs 2018 | Sat Grp 4 Run 3 | P1 | 55 | Stohr WF1 | 9/11 | 1:38.170 | 1:29.195Jim Devenport | +8.975s (10.06%) | |||
| Runoffs 2018 | Sat Grp 4 Run 2 | P1 | 55 | Stohr WF1 | 3/9 | 1:33.824 | 1:29.834Jim Devenport | +3.990s (4.44%) | |||
| Runoffs 2018 | Sat Grp 4 Run 1 | P1 | 55 | Stohr WF1 | 1/7 | 1:34.908 | 1:34.908you | +0.000s (0.00%) |
#39476 from Jeffrey Lederman · Rule change · TB 26-01 (2026-01 Fastrack)
In Prototype, GCR section 9.1.8.B.F.2, change as follows:
"Brake calipers may be ferrous or aluminum alloy. Effective 1/1/2026, carbon-carbon and carbon-ceramic brake rotors areprohibited and rotors must be ferrous. Brake rotor material is unrestricted."