T4 Max Tire Sizes
#40183 from Matthew Miller · Rule change · TB 26-06 (2026-06 Fastrack)
In T4 Spec Lines, Ford Mustang V6 (05-10), change Max. Tire Size as follows:
"255 275"
BoP Lab / Drivers / Matthew Miller
Matthew Miller 10 letters to Fastrack
Against the front of the class, by track and class
| Track | Class | Sessions | Typical gap to class best | Closest |
|---|---|---|---|---|
| Mid-Ohio Sports Car Course (2.40 mi) | T4 | 20 | +4.540s (4.51%) | +2.266s (2.18%) |
| Mid-Ohio Sports Car Course (2.53 mi) | T4 | 1 | +13.195s (12.12%) | +13.195s (12.12%) |
| Indianapolis Motor Speedway (2.59 mi) | T4 | 11 | +8.753s (7.56%) | +6.708s (5.69%) |
| Road America (4.05 mi) | T4 | 9 | +13.945s (8.85%) | +8.490s (5.38%) |
| Road America | T4 | 1 | ||
| World Wide Technology Raceway (1.60 mi) | SRF3 | 5 | +5.669s (8.53%) | +4.751s (7.17%) |
| Mid-Ohio Sports Car Course (2.26 mi) | EP | 5 | +13.151s (13.95%) | +11.867s (12.59%) |
| Mid-Ohio Sports Car Course (2.26 mi) | T4 | 5 | +5.008s (4.96%) | +3.468s (3.44%) |
| Hallett Motor Racing Circuit (1.80 mi) | GT2 | 11 | +1.548s (1.96%) | +0.449s (0.57%) |
| Circuit of the Americas (3.41 mi) | GT2 | 10 | +8.219s (6.06%) | +7.927s (5.85%) |
| Mid-Ohio Sports Car Course | T4 | 1 | ||
| Unknown track (2.59 mi) | T4 | 2 | +0.669s (0.57%) | +0.669s (0.57%) |
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.
Mid-Ohio Sports Car Course (2.40 mi)
| Event | Session | Class | # | Car | Pos | Best lap | Class best | To class best | Trap | Class trap | To class trap |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Great Lakes Champions 2026 | Grp 1 STL STU T3 T4 Race 2 | T4 | 96 | Ford Mustang | 3/3 | 1:45.894 | 1:41.697Madin Workman | +4.197s (4.13%) | 116.71/3 | 116.7you | +0.0 mph (0.0%) |
| Great Lakes Champions 2026 | Grp 1 STL STU T3 T4 Race 1 | T4 | 96 | Ford Mustang | 3/3 | 2:15.368 | 2:00.877Madin Workman | +14.491s (11.99%) | 98.73/3 | 110.7Trenton Kramer | -12.0 mph (-10.9%) |
| Great Lakes Champions 2026 | Grp 1 STL STU T3 T4 Qual 2 | T4 | 96 | Ford Mustang | 3/3 | 1:44.539 | 1:40.777Madin Workman | +3.762s (3.73%) | 115.91/3 | 115.9you | +0.0 mph (0.0%) |
| Great Lakes Champions 2026 | Grp 1 STL STU T3 T4 Qual 1 | T4 | 96 | Ford Mustang | 3/3 | 1:45.560 | 1:40.725Madin Workman | +4.835s (4.80%) | 115.11/3 | 115.1you | +0.0 mph (0.0%) |
| Ohio Valley Great Lakes Champions 2025 | Grp 4 STL STU GT3U T3 T4 Race 2 | T4 | 96 | Ford Mustang | 10/11 | 1:45.861 | 1:39.656Ethan Barker | +6.205s (6.23%) | 115.87/11 | 122.4Scotty B White | -6.6 mph (-5.4%) |
| Ohio Valley Great Lakes Champions 2025 | Grp 4 STL STU GT3U T3 T4 Race 1 | T4 | 96 | Ford Mustang | 10/12 | 1:46.107 | 1:40.911Ethan Barker | +5.196s (5.15%) | 116.64/12 | 117.5Chip Herr | -0.8 mph (-0.7%) |
| Ohio Valley Great Lakes Champions 2025 | Grp 4 STL STU GT3U T3 T4 Qual 2 | T4 | 96 | Ford Mustang | 8/9 | 1:48.117 | 1:40.842Matt Spicuzzi | +7.275s (7.21%) | 107.99/9 | 115.8Matt Spicuzzi | -7.9 mph (-6.9%) |
| Ohio Valley Great Lakes Champions 2025 | Grp 4 STL STU GT3U T3 T4 Qual 1 | T4 | 96 | Ford Mustang | 12/12 | 1:47.903 | 1:41.253Matt Spicuzzi | +6.650s (6.57%) | 114.87/12 | 117.1Chip Herr | -2.3 mph (-2.0%) |
| Ohio Valley Great Lakes Champions 2025 | Grp 4 STL STU GT3U T3 T4 Practice | T4 | 96 | Ford Mustang | 8/10 | 1:46.758 | 1:41.105Ayden Rose | +5.653s (5.59%) | 116.81/10 | 116.8you | +0.0 mph (0.0%) |
| Great Lakes Champions 2024 | Grp 1 T2 T3 T4 STL STU Race 2 | T4 | 96 | Ford Mustang | 6/7 | 1:45.101 | 1:40.561Marc Cefalo | +4.540s (4.51%) | |||
| Great Lakes Champions 2024 | Grp 1 T2 T3 T4 STL STU Race 1 | T4 | 96 | Ford Mustang | 8/8 | 1:45.609 | 1:41.818Marc Cefalo | +3.791s (3.72%) | |||
| Ohio Valley Region Hoosier SCCA Super Tour @ Mid-Ohio Sports Car Course | Grp 1 T2,T3,T4,STU,STL Race 2 | T4 | 96 | Ford Mustang | 3/4 | 1:45.843 | 1:42.382Michael Borden | +3.461s (3.38%) | 119.01/4 | 119.0you | +0.0 mph (0.0%) |
| Ohio Valley Region Hoosier SCCA Super Tour @ Mid-Ohio Sports Car Course | Grp 1 T2,T3,T4,STU,STL Race 1 | T4 | 96 | Ford Mustang | 3/5 | 1:46.406 | 1:41.717Michael Borden | +4.689s (4.61%) | 117.83/5 | 120.1Ralph Porter | -2.2 mph (-1.9%) |
| Ohio Valley Region Hoosier SCCA Super Tour @ Mid-Ohio Sports Car Course | Grp 1 T2,T3,T4,STU,STL Qual 2 | T4 | 96 | Ford Mustang | 4/5 | 1:48.219 | 1:43.205Michael Borden | +5.014s (4.86%) | 117.82/5 | 119.0Ralph Porter | -1.2 mph (-1.0%) |
| Ohio Valley Region Hoosier SCCA Super Tour @ Mid-Ohio Sports Car Course | Grp 1 T2,T3,T4,STU,STL Qual 1 | T4 | 96 | Ford Mustang | 3/4 | 1:46.422 | 1:44.156Michael Borden | +2.266s (2.18%) | 117.62/4 | 120.9Ralph Porter | -3.3 mph (-2.7%) |
| Mid Ohio Sports Car Course 2018 | Grp 7 T2,T3,T4,STU,STL Race 2 | T4 | 96 | Ford Mustang | 7/7 | 1:46.342 | 1:42.408John Heinricy | +3.934s (3.84%) | |||
| Mid Ohio Sports Car Course 2018 | Grp 7 T2,T3,T4,STU,STL Race 1 | T4 | 96 | Ford Mustang | 5/7 | 1:45.886 | 1:42.095Gresham Wagner | +3.791s (3.71%) | |||
| Mid Ohio Sports Car Course 2018 | Grp 7 T2,T3,T4,STU,STL Qual 2 | T4 | 96 | Ford Mustang | 7/7 | 1:46.676 | 1:42.112Gresham Wagner | +4.564s (4.47%) | |||
| Mid Ohio Sports Car Course 2018 | Grp 7 T2,T3,T4,STU,STL Qual 1 | T4 | 96 | Ford Mustang | 7/7 | 1:46.792 | 1:42.652Gresham Wagner | +4.140s (4.03%) | |||
| Mid Ohio Sports Car Course 2018 | Grp 7 T2,T3,T4,STU,STL Prac | T4 | 96 | Ford Mustang | 8/9 | 1:48.990 | 1:42.934Gresham Wagner | +6.056s (5.88%) |
Mid-Ohio Sports Car Course (2.53 mi)
| Event | Session | Class | # | Car | Pos | Best lap | Class best | To class best | Trap | Class trap | To class trap |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Great Lakes Champions 2024 | Grp 1 T2 T3 T4 STL STU Qual | T4 | 96 | Ford Mustang | 8/8 | 2:02.027 | 1:48.832Marc Cefalo | +13.195s (12.12%) |
Indianapolis Motor Speedway (2.59 mi)
| Event | Session | Class | # | Car | Pos | Best lap | Class best | To class best | Trap | Class trap | To class trap |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Runoffs 2021 | T4 Race | T4 | 96 | Ford Mustang V6 | 29/46 | 2:04.008 | 1:55.929John Heinricy | +8.079s (6.97%) | 124.011/46 | 127.3Alexander Schefer | -3.2 mph (-2.5%) |
| Runoffs 2021 | T4 Qual 3 | T4 | 96 | Ford Mustang V6 | 40/45 | 2:03.023 | 1:54.397Stephen Blethen | +8.626s (7.54%) | 122.821/45 | 127.0Raymond Blethen | -4.2 mph (-3.3%) |
| Runoffs 2021 | T4 Qual 2 | T4 | 96 | Ford Mustang V6 | 37/44 | 2:02.221 | 1:55.292Michael Borden | +6.929s (6.01%) | 122.516/44 | 126.2Richard Dickey | -3.7 mph (-2.9%) |
| Runoffs 2021 | T4 Qual 1 | T4 | 96 | Ford Mustang V6 | 35/44 | 2:04.533 | 1:55.780Michael Borden | +8.753s (7.56%) | 122.511/43 | 125.6Derrick Ambrose | -3.1 mph (-2.5%) |
| Runoffs 2021 | Grp 6 Run 2 T2,T3,T4 Mon | T4 | 96 | Ford Mustang V6 | 21/22 | 2:05.994 | 1:53.585Izzy Sanchez | +12.409s (10.92%) | 123.08/22 | 142.0Izzy Sanchez | -19.0 mph (-13.4%) |
| Runoffs 2021 | Grp 6 Run 1 T2,T2,T4 Mon | T4 | 96 | Ford Mustang V6 | 21/24 | 2:06.043 | 1:53.117Derrick Ambrose | +12.926s (11.43%) | 123.56/23 | 145.8Derrick Ambrose | -22.3 mph (-15.3%) |
| Runoffs 2017 | T4 Race | T4 | 96 | Ford Mustang V6 (2005) | 30/38 | 2:05.453 | 1:56.549Don Knowles | +8.904s (7.64%) | |||
| Runoffs 2017 | T4 Qual 4 | T4 | 96 | Ford Mustang V6 (2005) | 35/39 | 2:04.783 | 1:56.566Oscar Jackson | +8.217s (7.05%) | |||
| Runoffs 2017 | T4 Qual 3 | T4 | 96 | Ford Mustang V6 (2005) | 35/36 | 2:07.303 | 1:56.756Oscar Jackson | +10.547s (9.03%) | |||
| Runoffs 2017 | T4 Qual 2 | T4 | 96 | Ford Mustang V6 (2005) | 27/35 | 2:05.874 | 6.908James Coughlin | +118.966s (1722.15%) | |||
| Runoffs 2017 | T4 Qual 1 | T4 | 96 | Ford Mustang V6 (2005) | 24/34 | 2:04.497 | 1:57.789Oscar Jackson | +6.708s (5.69%) |
Road America (4.05 mi)
| Event | Session | Class | # | Car | Pos | Best lap | Class best | To class best | Trap | Class trap | To class trap |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Runoffs 2020 | T4 Race | T4 | 96 | Ford Mustang V6 | 16/19 | 2:46.371 | 2:37.881Chi Ho | +8.490s (5.38%) | 121.816/19 | 128.6Chi Ho | -6.7 mph (-5.2%) |
| Runoffs 2020 | T3,T4 Qual 3 | T4 | 96 | Ford Mustang V6 | 17/19 | 2:46.874 | 2:37.403John Heinricy | +9.471s (6.02%) | 120.817/19 | 130.2Chi Ho | -9.4 mph (-7.2%) |
| Runoffs 2020 | T3,T4 Qual 2 | T4 | 96 | Ford Mustang V6 | 16/18 | 2:51.562 | 2:37.617John Heinricy | +13.945s (8.85%) | 121.79/18 | 128.4Chi Ho | -6.7 mph (-5.2%) |
| Runoffs 2020 | T4 Qual 1 | T4 | 96 | Ford Mustang V6 | 12/17 | 2:50.310 | 2:39.113John Heinricy | +11.197s (7.04%) | 120.811/17 | 127.4Richard Dickey | -6.6 mph (-5.2%) |
| Chicago Region Hoosier SCCA Super Tour @ Road America | Grp 1 T2,T3,T4 Race 2 | T4 | 96 | Ford Mustang | 7/11 | 2:53.190 | 2:38.021Nick Leverone | +15.169s (9.60%) | 119.78/11 | 127.6Richard Dickey | -7.8 mph (-6.1%) |
| Chicago Region Hoosier SCCA Super Tour @ Road America | Grp 1 T2,T3,T4 Race 1 | T4 | 96 | Ford Mustang | 8/13 | 2:53.000 | 2:39.242Michael Borden | +13.758s (8.64%) | 121.79/13 | 126.2Richard Dickey | -4.5 mph (-3.6%) |
| Chicago Region Hoosier SCCA Super Tour @ Road America | Grp 1 T2,T3,T4 Qual 2 | T4 | 96 | Ford Mustang | 10/12 | 2:57.772 | 2:39.851Michael Borden | +17.921s (11.21%) | 112.812/12 | 124.3Nick Leverone | -11.5 mph (-9.2%) |
| Chicago Region Hoosier SCCA Super Tour @ Road America | Grp 1 T2,T3,T4 Qual 1 | T4 | 96 | Ford Mustang | 11/12 | 2:58.450 | 2:29.205Nick Leverone | +29.245s (19.60%) | 113.912/12 | 126.0Richard Dickey | -12.1 mph (-9.6%) |
| Chicago Region Hoosier SCCA Super Tour @ Road America | Grp 1 T2,T3,T4 Practice | T4 | 96 | Ford Mustang | 10/10 | 3:07.256 | 2:40.519Nick Leverone | +26.737s (16.66%) | 0.810/10 | 0.9Nick Leverone | -0.1 mph (-12.1%) |
Road America
| 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 | T4 | 96 | Ford Mustang | 10 |
World Wide Technology Raceway (1.60 mi)
| Event | Session | Class | # | Car | Pos | Best lap | Class best | To class best | Trap | Class trap | To class trap |
|---|---|---|---|---|---|---|---|---|---|---|---|
| ADS 2020 | Grp 1 SRF3 Race 2 | SRF3 | 96 | SCCA Enterprises Spec Racer Ford Gen3 | 16/19 | 1:11.044 | 1:06.293Richard Wiese | +4.751s (7.17%) | 120.518/19 | 129.9Justin Claucherty | -9.4 mph (-7.3%) |
| ADS 2020 | Grp 1 SRF3 Qual 2 | SRF3 | 96 | SCCA Enterprises Spec Racer Ford Gen3 | 21/16 | 1:05.764Richard Wiese | |||||
| ADS 2020 | Grp 1 SRF3 Race 1 | SRF3 | 96 | SCCA Enterprises Spec Racer Ford Gen3 | 15/21 | 1:12.106 | 1:06.437Richard Wiese | +5.669s (8.53%) | 117.221/21 | 127.2Bobby Sak | -10.0 mph (-7.9%) |
| ADS 2020 | Grp 1 SRF3 Qual 1 | SRF3 | 96 | SCCA Enterprises Spec Racer Ford Gen3 | 20/21 | 1:12.817 | 1:06.045Richard Wiese | +6.772s (10.25%) | 110.921/21 | 123.8Justin Claucherty | -12.9 mph (-10.4%) |
| ADS 2020 | Afternoon | SRF3 | 96 | SCCA Enterprises Spec Racer Ford Gen3 | 13/13 | 1:40.069 | 1:18.567Larry L Morris | +21.502s (27.37%) |
Mid-Ohio Sports Car Course (2.26 mi)
| Event | Session | Class | # | Car | Pos | Best lap | Class best | To class best | Trap | Class trap | To class trap |
|---|---|---|---|---|---|---|---|---|---|---|---|
| GL RoC OVR Hoosier SCCA Super Tour (Ohio Valley Region) | Grp 1 T2,T3,T4,STU,STL Race 2 | T4 | 96 | Ford Mustang | 8/10 | 1:48.585 | 1:41.121James Coughlin | +7.464s (7.38%) | 118.04/10 | 121.3James Coughlin | -3.3 mph (-2.7%) |
| GL RoC OVR Hoosier SCCA Super Tour (Ohio Valley Region) | Grp 1 T2,T3,T4,STU,STL Race 1 | T4 | 96 | Ford Mustang | 6/10 | 1:44.181 | 1:40.713John Heinricy | +3.468s (3.44%) | 119.23/10 | 120.1James Coughlin | -0.9 mph (-0.7%) |
| GL RoC OVR Hoosier SCCA Super Tour (Ohio Valley Region) | Grp 1 T2,T3,T4,STU,STL Qual 2 | T4 | 96 | Ford Mustang | 6/8 | 1:46.070 | 1:41.062James Coughlin | +5.008s (4.96%) | 118.32/8 | 120.1James Coughlin | -1.7 mph (-1.4%) |
| GL RoC OVR Hoosier SCCA Super Tour (Ohio Valley Region) | Grp 1 T2,T3,T4,STU,STL Qual 1 | T4 | 96 | Ford Mustang | 7/9 | 1:45.176 | 1:40.444John Heinricy | +4.732s (4.71%) | 118.04/9 | 119.9James Coughlin | -1.9 mph (-1.6%) |
| GL RoC OVR Hoosier SCCA Super Tour (Ohio Valley Region) | Grp 1 T2,T3,T4,STU,STL Prac | T4 | 96 | Ford Mustang | 7/9 | 1:47.818 | 1:41.838James Coughlin | +5.980s (5.87%) | 117.33/9 | 119.0James Coughlin | -1.7 mph (-1.4%) |
| Runoffs 2016 | EP Race | EP | 09 | Mazda RX-7 (1986) | 22/23 | 1:47.417 | 1:34.266Michael Galati | +13.151s (13.95%) | |||
| Runoffs 2016 | EP Qual 4 | EP | 09 | Mazda RX-7 (1986) | 24/22 | 1:33.847Michael Galati | |||||
| Runoffs 2016 | EP Qual 3 | EP | 09 | Mazda RX-7 (1986) | 23/21 | 1:34.330Joe Moser | |||||
| Runoffs 2016 | EP Qual 2 | EP | 09 | Mazda RX-7 (1986) | 20/21 | 1:47.264 | 1:34.049Michael Galati | +13.215s (14.05%) | |||
| Runoffs 2016 | EP Qual 1 | EP | 09 | Mazda RX-7 (1986) | 21/24 | 1:46.155 | 1:34.288Joe Moser | +11.867s (12.59%) |
Hallett Motor Racing Circuit (1.80 mi)
| Event | Session | Class | # | Car | Pos | Best lap | Class best | To class best | Trap | Class trap | To class trap |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Green Country Grand Prix AVRG 2019 | Grp 3 GT1,GT2,GT3,GTX,AS,T1 Race 2 | GT2 | 83 | Dodge Viper | 6/5 | 1:18.057Mark Kirby | |||||
| Green Country Grand Prix AVRG 2019 | Grp 3 GT1,GT2,GT3,GTX,AS,T1 Race 1 | GT2 | 83 | Dodge Viper | 7/6 | 1:17.827Don McMillon | |||||
| Hallett Motor Circuit 2018 | Grp 5 GT1,GT2,GT3, AS,T1 Race 2 | GT2 | 83 | Dodge Viper | 2/5 | 1:19.285 | 1:16.933Max Nufer | +2.352s (3.06%) | |||
| Hallett Motor Circuit 2018 | Grp 5 GT1,GT2,GT3,AS,T1 Qual 2 | GT2 | 83 | Dodge Viper | 7/1 | 1:20.432Mark Kirby | |||||
| Hallett Motor Circuit 2018 | Grp 5 GT1,GT2,GT3,AS,T1 Race 1 | GT2 | 83 | Dodge Viper | 4/7 | 1:18.257 | 1:16.886Don McMillon | +1.371s (1.78%) | |||
| Hallett Motor Circuit 2018 | Grp 5 GT1,GT2,GT3,AS,T1 Qual 1 | GT2 | 83 | Dodge Viper | 5/7 | 1:19.542 | 1:17.379Max Nufer | +2.163s (2.80%) | |||
| Hallett Motor Circuit 2018 | Testing | GT2 | 83 | Dodge Viper | 2/2 | 87:06.537 | 1:34.123Sonny Watkins | +5132.414s (5452.88%) | |||
| Hallett Motor Circuit 2017 | Grp 5 GT1,GT2,GT3,AS,T1 Race 2 | GT2 | 83 | 344613 | 4/5 | 1:20.633 | 1:19.085Mark Kirby | +1.548s (1.96%) | |||
| Hallett Motor Circuit 2017 | Grp 5 GT1,GT2,GT3,AS,T1 Qual 2 | GT2 | 83 | 344613 | 2/3 | 1:18.997 | 1:18.548Nate Stacy | +0.449s (0.57%) | |||
| Hallett Motor Circuit 2017 | Grp 5 GT1,GT2,GT3,AS,T1 Race 1 | GT2 | 83 | 344613 | 3/7 | 1:20.717 | 1:19.279Mike McGinley | +1.438s (1.81%) | |||
| Hallett Motor Circuit 2017 | Grp 5 GT1,GT2,GT3,AS,T1 Qual1 | GT2 | 83 | 344613 | 7/8 | 1:22.105 | 1:17.479Mike McGinley | +4.626s (5.97%) |
Circuit of the Americas (3.41 mi)
| Event | Session | Class | # | Car | Pos | Best lap | Class best | To class best | Trap | Class trap | To class trap |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Polar Prix 2019 | Grp 6 GT1,GT2,GT3, GTX,AS,T1 Race 2 | GT2 | 83 | Dodge Viper | 10/8 | 2:33.934Barry Boes | |||||
| Polar Prix 2019 | Grp 6 GT1,GT2,GT3, GTX,AS,T1 Race 1 | GT2 | 83 | Dodge Viper | 10/8 | 2:19.879Barry Boes | |||||
| Polar Prix 2019 | Grp 6 GT1,GT2,GT3, GTX,AS,T1 Qual 2 | GT2 | 83 | Dodge Viper | 9/3 | 2:36.600Brad Gross | |||||
| Polar Prix 2019 | Grp 6 GT1,GT2,GT3, GTX,AS,T1 Qual 1 | GT2 | 83 | Dodge Viper | 10/10 | 3:26.441 | 2:21.772Barry Boes | +64.669s (45.61%) | 94.910/10 | 146.5Lou Gigliotti | -51.6 mph (-35.2%) |
| Polar Prix 2019 | Grp 6 GT1,GT2,GT3, GTX,AS,T1 Practice | GT2 | 83 | Dodge Viper | 7/8 | 2:28.530 | 2:20.059Barry Boes | +8.471s (6.05%) | 120.37/8 | 155.0Mark Kirby | -34.7 mph (-22.4%) |
| Circuit Americas 2018 | Grp 6 GT1,GT2,AS,T1 Race 2 | GT2 | 83 | Dodge Viper (2004) | 4/13 | 2:23.909 | 2:15.690Shane Lewis | +8.219s (6.06%) | 139.87/13 | 157.1Joe Napoleon | -17.4 mph (-11.0%) |
| Circuit Americas 2018 | Grp 6 GT1,GT2,AS,T1 Race 1 | GT2 | 83 | Dodge Viper (2004) | 7/13 | 2:23.406 | 2:15.479Shane Lewis | +7.927s (5.85%) | 129.39/13 | 153.6Shane Lewis | -24.3 mph (-15.8%) |
| Circuit Americas 2018 | Grp 6 GT1,GT2,AS,T1 Qual 2 | GT2 | 83 | Dodge Viper (2004) | 12 | ||||||
| Circuit Americas 2018 | Grp 6 GT1,GT2,GT3,AS,T1 Qual 1 | GT2 | 83 | Dodge Viper (2004) | 10/13 | 2:28.875 | 2:13.171Shane Lewis | +15.704s (11.79%) | 125.911/13 | 156.8Barry Bell | -30.9 mph (-19.7%) |
| Circuit Americas 2018 | Grp 6 GT1,GT2,GT3,AS,T1 Practice | GT2 | 83 | Dodge Viper (2004) | 11/14 | 2:31.530 | 2:13.873Shane Lewis | +17.657s (13.19%) | 115.514/14 | 159.0Shane Lewis | -43.5 mph (-27.4%) |
Mid-Ohio Sports Car Course
| Event | Session | Class | # | Car | Pos | Best lap | Class best | To class best | Trap | Class trap | To class trap |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Mid Ohio Sports Car Course 2018 | Thursday Test | T4 | 96 | Ford Mustang | 8/1 | 1:41.809Gresham Wagner |
Unknown track (2.59 mi)
| Event | Session | Class | # | Car | Pos | Best lap | Class best | To class best | Trap | Class trap | To class trap |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Runoffs 2017 | Sun Grp 6 Run 2 | T4 | 96 | Ford Mustang V6 (2005) | 10/16 | 2:05.631 | 1:59.078Chi Ho | +6.553s (5.50%) | |||
| Runoffs 2017 | Sun Grp 6 Run 1 | T4 | 96 | Ford Mustang V6 (2005) | 9/15 | 1:58.885 | 1:58.216Oscar Jackson | +0.669s (0.57%) |
Letters to Fastrack
T4 2005-2010 4 Liter Mustang Gear Changes
#39564 from Matthew Miller · Taken care of · Minutes (2026-02 Fastrack)
Please see response to letter #39489 in current Fastrack.
T3 Please change 2011-2014 Mustang V6 Spec Line to 2005-2014
#39558 from Matthew Miller · Rule change · TB 26-02 (2026-02 Fastrack)
In T3 Spec Lines, Ford Mustang V6 (11-14) , add to Notes the following:
"2005-2010 chassis/body permitted."
EP/FP/HP Please Lower Weight of 280Z
#38871 from Matthew Miller · Rule change · TB 25-09 (2025-09 Fastrack)
In EP Spec Lines, Nissan 280Z, change Weight (lbs) as follows:
"(Effective 11/1/2025) 2560 2400
*2624 2460
**2688 2520"
GT2 Please Classify FIA GT4 Mustang in GT2
#32397 from Matthew Miller · Taken care of · Minutes (2023-03 Fastrack)
Thank you for your letter. Please see letter #32274 in current Fastrack.
T4 Help for the 2005-2010 4.0 Liter V6
#29773 from Matthew Miller · Taken care of · Minutes (2021-01 Fastrack)
Thank you for your letter. Please see letter #29752 for T4 BOP responses in current Fastrack.
FP Request to Classify 1996-2000 Honda Civic EX
#29515 from Matthew Miller · Rule change · TB 20-12 (2020-12 Fastrack)
In FP, classify the Honda Civic EX (96-00).
A specification table follows in the original; it is not shown here.
GT1 Request to Reduce Weight Added for Use of Sequential Transmission
#27752 from Matthew Miller · No action required · Minutes (2020-01 Fastrack)
Thank you for your letter. Please see the response to letter #27750 in this Fastrack's Technical Bulletin.
GT1 Request to Reduce Additional Weight for 18
#27751 from Matthew Miller · Rule change · TB 20-01 (2020-01 Fastrack)
In GT1 Specifications, section 9.1.2.D.7.a.5., make change as follows:
"For cars not specified to allow 18 inch wheels, 18 inch wheels permitted with a 100 50 pound weight
penalty."
T4 Allow 316mm Mustang GT front rotors on 2005 and up V6
#27721 from Matthew Miller · Taken care of · Minutes (2020-01 Fastrack)
Thank you for your letter. Please see the response to letter #27739 in this Fastrack's Technical Bulletin.