T4 T4 BOP Requests
#33304 from Steve Bertok · Taken care of · Minutes (2022-12 Fastrack)
Thank you for your letter. BOP changes to the T4 MX5 were made in letter 32933 in current Fastrack.
BoP Lab / Drivers / Steve Bertok
Steve Bertok 6 letters to Fastrack
Against the front of the class, by track and class
| Track | Class | Sessions | Typical gap to class best | Closest |
|---|---|---|---|---|
| Road America (4.05 mi) | T4 | 4 | +2.444s (1.55%) | +1.413s (0.89%) |
| Unknown track (4.05 mi) | T4 | 2 | +0.583s (0.37%) | +0.583s (0.37%) |
| Michelin Raceway Road Atlanta (2.54 mi) | T4 | 4 | +0.000s (0.00%) | +0.000s (0.00%) |
| Sebring International Raceway (3.74 mi) | T4 | 5 | +1.419s (0.92%) | +0.344s (0.22%) |
| Virginia International Raceway (3.27 mi) | T4 | 14 | +1.319s (1.01%) | +0.072s (0.05%) |
| Virginia International Raceway | T4 | 3 | +0.000s (0.00%) | +0.000s (0.00%) |
| Unknown track (3.27 mi) | T4 | 3 | +0.998s (0.75%) | +0.790s (0.59%) |
| Mid-Ohio Sports Car Course (2.26 mi) | T4 | 5 | +0.314s (0.31%) | +0.141s (0.14%) |
| Watkins Glen International (3.40 mi) | T4 | 6 | +1.647s (1.21%) | +0.000s (0.00%) |
| NOLA Motorsports Park (2.75 mi) | T4 | 4 | +2.651s (2.25%) | +2.199s (1.85%) |
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.
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 | 90 | Mazda MX-5 | 4/19 | 2:40.325 | 2:37.881Chi Ho | +2.444s (1.55%) | 122.014/19 | 128.6Chi Ho | -6.5 mph (-5.1%) |
| Runoffs 2020 | T3,T4 Qual 3 | T4 | 90 | Mazda MX-5 | 5/19 | 2:39.948 | 2:37.403John Heinricy | +2.545s (1.62%) | 123.910/19 | 130.2Chi Ho | -6.3 mph (-4.8%) |
| Runoffs 2020 | T3,T4 Qual 2 | T4 | 90 | Mazda MX-5 | 8/18 | 2:42.923 | 2:37.617John Heinricy | +5.306s (3.37%) | 121.311/18 | 128.4Chi Ho | -7.0 mph (-5.5%) |
| Runoffs 2020 | T4 Qual 1 | T4 | 90 | Mazda MX-5 | 11/17 | 2:40.526 | 2:39.113John Heinricy | +1.413s (0.89%) | 119.714/17 | 127.4Richard Dickey | -7.6 mph (-6.0%) |
Unknown track (4.05 mi)
| Event | Session | Class | # | Car | Pos | Best lap | Class best | To class best | Trap | Class trap | To class trap |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Runoffs 2020 | Grp 7 Run 3 T2,T3,T4 | T4 | 90 | Mazda MX-5 | 3/10 | 2:39.673 | 2:39.090Chi Ho | +0.583s (0.37%) | 122.94/10 | 123.9Brent Simonson | -0.9 mph (-0.8%) |
| Runoffs 2020 | Grp 7 Run 2 T2,T3,T4 | T4 | 90 | Mazda MX-5 | 3/9 | 2:41.320 | 2:39.275Nick Leverone | +2.045s (1.28%) | 123.74/9 | 126.0Roldan de Guzman | -2.3 mph (-1.8%) |
Michelin Raceway Road Atlanta (2.54 mi)
| Event | Session | Class | # | Car | Pos | Best lap | Class best | To class best | Trap | Class trap | To class trap |
|---|---|---|---|---|---|---|---|---|---|---|---|
| SARRC 2020 | Grp 7 STL,STU,T2, T3,T4, SPU,ITA,ITS,ITR,SM5 Race 2 | T4 | 90 | Mazda MX-5 | 1/3 | 1:42.678 | 1:42.678you | +0.000s (0.00%) | 115.71/3 | 115.7you | +0.0 mph (0.0%) |
| SARRC 2020 | Grp 7 STL,STU,T2, T3,T4, SPU,ITA,ITS,ITR,SM5 Qual 2 | T4 | 90 | Mazda MX-5 | 1/3 | 1:40.940 | 1:40.940you | +0.000s (0.00%) | 114.53/3 | 115.1Robert Spence | -0.6 mph (-0.5%) |
| SARRC 2020 | Grp 7 STL,STU,T2, T3,T4, SPU,ITA,ITS,ITR,SM5 Race 1 | T4 | 90 | Mazda MX-5 | 1/5 | 1:42.756 | 1:42.756you | +0.000s (0.00%) | 115.41/5 | 115.4you | +0.0 mph (0.0%) |
| SARRC 2020 | Grp 7 STL,STU,T2, T3,T4, SPU,ITA,ITS,ITR,SM5 Qual 1 | T4 | 90 | Mazda MX-5 | 1/5 | 1:42.865 | 1:42.865you | +0.000s (0.00%) | 113.61/5 | 113.6you | +0.0 mph (0.0%) |
Sebring International Raceway (3.74 mi)
| 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 2 STL,STU,T2,T3,T4 Race 2 | T4 | 90 | Mazda MX-5 | 2/9 | 2:34.979 | 2:34.147Michael Borden | +0.832s (0.54%) | 111.01/9 | 111.0you | +0.0 mph (0.0%) |
| Central Florida Region Hoosier SCCA Super Tour @ Sebring International Raceway | Grp 2 STL,STU,T2,T3,T4 Race 1 | T4 | 90 | Mazda MX-5 | 2/9 | 2:35.724 | 2:33.866Michael Borden | +1.858s (1.21%) | 109.91/9 | 109.9you | +0.0 mph (0.0%) |
| Central Florida Region Hoosier SCCA Super Tour @ Sebring International Raceway | Grp STL,STU,T2,T3,T4 Qual 2 | T4 | 90 | Mazda MX-5 | 3/9 | 3:03.817 | 3:00.349Bryan Horowitz | +3.468s (1.92%) | 106.51/8 | 106.5you | +0.0 mph (0.0%) |
| Central Florida Region Hoosier SCCA Super Tour @ Sebring International Raceway | Grp 2 GT1,GT2,GT3,T1,AS,GTX Qual 1 | T4 | 90 | Mazda MX-5 | 4/10 | 2:35.908 | 2:34.489Tyler Quance | +1.419s (0.92%) | 110.51/10 | 110.5you | +0.0 mph (0.0%) |
| Central Florida Region Hoosier SCCA Super Tour @ Sebring International Raceway | Grp 2 STL,STU,T2,T3,T4 Practice | T4 | 90 | Mazda MX5 (2006) | 2/8 | 2:35.475 | 2:35.131Michael Borden | +0.344s (0.22%) | 111.42/8 | 112.5John Heinricy | -1.1 mph (-0.9%) |
Virginia International Raceway (3.27 mi)
| Event | Session | Class | # | Car | Pos | Best lap | Class best | To class best | Trap | Class trap | To class trap |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Runoffs 2019 | T4 Race | T4 | 190 | Mazda MX-5 | 9/25 | 2:12.278 | 2:10.959Nick Leverone | +1.319s (1.01%) | 122.521/25 | 128.9Tommy Boileau | -6.4 mph (-4.9%) |
| Runoffs 2019 | T4/B-Spec Qual 3 | T4 | 190 | Mazda MX-5 | 8/25 | 2:12.151 | 2:11.285Nick Leverone | +0.866s (0.66%) | 122.512/25 | 127.7Tommy Boileau | -5.2 mph (-4.0%) |
| Runoffs 2019 | T4 Qual 2 | T4 | 190 | Mazda MX-5 | 11/25 | 2:13.106 | 2:11.257John Heinricy | +1.849s (1.41%) | 118.821/25 | 126.7Owen Schefer | -7.9 mph (-6.2%) |
| Runoffs 2019 | T4/B-Spec Qual 1 | T4 | 190 | Mazda MX-5 | 9/24 | 2:13.209 | 2:11.340Nick Leverone | +1.869s (1.42%) | 119.815/24 | 125.9Owen Schefer | -6.1 mph (-4.8%) |
| VIRginia International Raceway 2018 | Grp 2 STL,STU,T2,T3,T4 Race 2 | T4 | 29 | Mazda MX-5 (2006) | 3/8 | 2:16.034 | 2:12.998Owen Schefer | +3.036s (2.28%) | 119.88/8 | 129.1Owen Schefer | -9.3 mph (-7.2%) |
| VIRginia International Raceway 2018 | Grp 2 STL,STU,T2,T3,T4 Race | T4 | 29 | Mazda MX-5 (2006) | 4/7 | 2:21.631 | 2:19.241Owen Schefer | +2.390s (1.72%) | 121.65/7 | 127.5Owen Schefer | -5.9 mph (-4.6%) |
| VIRginia International Raceway 2018 | Grp 2 STL,STU,T2,T3,T4 Qual 2 | T4 | 29 | Mazda MX-5 (2006) | 5/8 | 2:14.789 | 2:14.046Chi Ho | +0.743s (0.55%) | 117.28/8 | 125.5Owen Schefer | -8.3 mph (-6.6%) |
| VIRginia International Raceway 2018 | Grp 2 STL,STU,T2,T3,T4 Qual 1 | T4 | 29 | Mazda MX-5 (2006) | 5/8 | 2:16.550 | 2:15.311Owen Schefer | +1.239s (0.92%) | 117.98/8 | 124.9Owen Schefer | -7.0 mph (-5.6%) |
| VIRginia International Raceway 2018 | Grp 2 STL,STU,T2,T3,T4 Prac | T4 | 29 | Mazda MX-5 (2006) | 4/7 | 2:17.203 | 2:13.950Owen Schefer | +3.253s (2.43%) | 118.17/7 | 126.5Owen Schefer | -8.4 mph (-6.6%) |
| Virginia International Raceway 2017 | Grp 4 STL,STU,T2,T3,T4 Race 2 | T4 | 24 | 4/13 | 2:14.096 | 2:13.669Felix Borodaty | +0.427s (0.32%) | ||||
| Virginia International Raceway 2017 | Grp 4 STL.STU,T2,T3,T4 Race 1 | T4 | 24 | 7/14 | 2:15.197 | 2:13.730Don Knowles | +1.467s (1.10%) | ||||
| Virginia International Raceway 2017 | Grp 4 STL.STU,T2,T3,T4 Qual 2 | T4 | 24 | 2/16 | 2:13.168 | 2:12.129Don Knowles | +1.039s (0.79%) | ||||
| Virginia International Raceway 2017 | Grp 4 STL,STU,T2,T3,T4 Qual 1 | T4 | 24 | 3/15 | 2:14.002 | 2:12.307Don Knowles | +1.695s (1.28%) | ||||
| Virginia International Raceway 2017 | Grp 4 STL.STU,T2,T3,T4 Prac | T4 | 24 | 2/15 | 2:13.333 | 2:13.261Don Knowles | +0.072s (0.05%) |
Virginia International Raceway
| Event | Session | Class | # | Car | Pos | Best lap | Class best | To class best | Trap | Class trap | To class trap |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Runoffs 2019 | Grp 7 Run 3 | T4 | 190 | Mazda MX-5 | 4/13 | 2:14.294 | 2:12.557Thomas Fowler | +1.737s (1.31%) | |||
| Virginia International Raceway 2017 | Grp 4 STL.STU,T2,T3,T4 Race 2 | T4 | 24 | 2 | |||||||
| Virginia International Raceway 2017 | Test | T4 | 24 | 1/6 | 2:13.310 | 2:13.310you | +0.000s (0.00%) |
Unknown track (3.27 mi)
| Event | Session | Class | # | Car | Pos | Best lap | Class best | To class best | Trap | Class trap | To class trap |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Runoffs 2019 | Grp 7 Run 3 | T4 | 190 | Mazda MX-5 | 4/13 | 2:14.294 | 2:12.557Thomas Fowler | +1.737s (1.31%) | 120.310/13 | 126.1Stephen Blethen | -5.8 mph (-4.6%) |
| Runoffs 2019 | Grp 7 Run 2 | T4 | 190 | Mazda MX-5 | 3/15 | 2:14.608 | 2:13.610Brian Reilly | +0.998s (0.75%) | 121.09/15 | 126.9Tommy Boileau | -5.8 mph (-4.6%) |
| Runoffs 2019 | Grp 7 Run 1 | T4 | 190 | Mazda MX-5 | 3/16 | 2:14.488 | 2:13.698Thomas Fowler | +0.790s (0.59%) | 122.39/16 | 126.7Brian Reilly | -4.4 mph (-3.4%) |
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 | 90 | Mazda MX-5 | 4/10 | 1:42.700 | 1:41.121James Coughlin | +1.579s (1.56%) | 117.15/10 | 121.3James Coughlin | -4.2 mph (-3.4%) |
| GL RoC OVR Hoosier SCCA Super Tour (Ohio Valley Region) | Grp 1 T2,T3,T4,STU,STL Race 1 | T4 | 90 | Mazda MX-5 | 2/10 | 1:40.854 | 1:40.713John Heinricy | +0.141s (0.14%) | 118.54/10 | 120.1James Coughlin | -1.6 mph (-1.3%) |
| GL RoC OVR Hoosier SCCA Super Tour (Ohio Valley Region) | Grp 1 T2,T3,T4,STU,STL Qual 2 | T4 | 90 | Mazda MX-5 | 2/8 | 1:41.276 | 1:41.062James Coughlin | +0.214s (0.21%) | 117.16/8 | 120.1James Coughlin | -2.9 mph (-2.4%) |
| GL RoC OVR Hoosier SCCA Super Tour (Ohio Valley Region) | Grp 1 T2,T3,T4,STU,STL Qual 1 | T4 | 90 | Mazda MX-5 | 4/9 | 1:41.588 | 1:40.444John Heinricy | +1.144s (1.14%) | 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 | 90 | Mazda MX-5 | 2/9 | 1:42.152 | 1:41.838James Coughlin | +0.314s (0.31%) | 115.64/9 | 119.0James Coughlin | -3.4 mph (-2.8%) |
Watkins Glen International (3.40 mi)
| Event | Session | Class | # | Car | Pos | Best lap | Class best | To class best | Trap | Class trap | To class trap |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Watkins Glen International 2018 | Grp 7 T2,T3,T4,STL,STU Race 2 | T4 | 21 | Mazda MX-5 | 6/6 | 2:27.404 | 2:16.056Felix Borodaty | +11.348s (8.34%) | |||
| Watkins Glen International 2018 | Grp 7 T2,T3,T4,STL,STU Race 1 | T4 | 21 | Mazda MX-5 | 3/7 | 2:16.672 | 2:14.916John Heinricy | +1.756s (1.30%) | |||
| Watkins Glen International 2018 | Grp 7 T2,T3,T4,STL,STU Qual 2 | T4 | 21 | Mazda MX-5 | 4/3 | 2:15.058Jared Lendrum | |||||
| Watkins Glen International 2018 | Grp 7 T2,T3,T4,STL,STU Qual 1 | T4 | 21 | Mazda MX-5 | 3/7 | 2:15.918 | 2:15.019John Heinricy | +0.899s (0.67%) | |||
| Watkins Glen International 2018 | Grp 7 T2,T3,T4,STL,STU Prac | T4 | 21 | Mazda MX-5 | 3/7 | 2:17.213 | 2:15.566Jared Lendrum | +1.647s (1.21%) | |||
| Watkins Glen International 2018 | Test2 | T4 | 21 | Mazda MX-5 | 1/1 | 2:15.190 | 2:15.190you | +0.000s (0.00%) |
NOLA Motorsports Park (2.75 mi)
| Event | Session | Class | # | Car | Pos | Best lap | Class best | To class best | Trap | Class trap | To class trap |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Voodoo Quartre NOLA Motorsports Park 2017 | Grp 1 Race 2 | T4 | 90 | SCR | 7/7 | 2:01.070 | 1:58.871Darren Seltzer | +2.199s (1.85%) | |||
| Voodoo Quartre NOLA Motorsports Park 2017 | Grp 1 Qualifying 2 | T4 | 90 | SCR | 4/6 | 2:00.555 | 1:57.904Darren Seltzer | +2.651s (2.25%) | |||
| Voodoo Quartre NOLA Motorsports Park 2017 | Grp 1 Race 1 | T4 | 90 | SCR | 6/8 | 2:02.207 | 1:59.225Darren Seltzer | +2.982s (2.50%) | |||
| Voodoo Quartre NOLA Motorsports Park 2017 | Grp 1 Qualifying 1 | T4 | 90 | SCR | 5/8 | 2:02.504 | 1:59.333Thomas Hart | +3.171s (2.66%) |
Letters to Fastrack
T4 MX-5 Weight Penalty
#31838 from Steve Bertok · Not recommended · Minutes (2022-01 Fastrack)
NR: Thank you for your letter. The performance adjustments published are the result of thoughtful consideration, data
collection, and analysis from all of the touring races throughout the 2021 season. Decisions are not based solely on a single
event but all touring races throughout every region. No BOP decision is made quickly or without careful consideration. We ask
that you bring out your cars and race. Without data on the adjusted cars further corrections can't be made. Please
participate. The more data we get, the better our corrections will be. Please see some recent changes in the GCR that include
some of your requests. The car that did claim the pole position was also adjusted with weight.
SM Opposes Tire Limiting Proposal
#28643 from Steve Bertok · Taken care of · Minutes (2019-05 Fastrack)
Thank you for taking the time to respond to the WDYT. Please see response to initial request letter #27041 in the May Fastrack.
T4 Support for letters 27763, 27764
#27765 from Steve Bertok · Taken care of · Minutes (2020-01 Fastrack)
Thank you for your letter. Please see the response to letters #27763 and 27764 in this Fastrack.
T4 MX-5 minimum weight reduction, letter number 27739
#27762 from Steve Bertok · 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.
T4 Opposes adjustable shocks in T4
#26227 from Steve Bertok · No action required · Minutes (2019-03 Fastrack)
Thank you for your letter. Your response has been logged.