SM Tire Limiting Proposal
#28582 from Alan Leukhardt III · 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.
BoP Lab / Drivers / Alan Leukhardt III
| Track | Class | Sessions | Typical gap to class best | Closest |
|---|---|---|---|---|
| Buttonwillow Raceway Park (2.57 mi) | SM | 10 | +6.508s (5.39%) | +4.738s (3.86%) |
| Buttonwillow Raceway Park (2.92 mi) | SM | 10 | +3.471s (2.74%) | +2.497s (1.99%) |
| Buttonwillow Raceway Park (3.02 mi) | SM | 6 | +3.297s (2.58%) | +2.731s (2.09%) |
| Willow Springs Raceway | SM | 3 | +3.523s (3.66%) | +2.795s (2.89%) |
| Auto Club Speedway (2.88 mi) | STL | 1 | +6.807s (5.70%) | +6.807s (5.70%) |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Cal Club 2026 | Grp 2 SM SMX Race 2 | SM | 17 | Mazda Miata (1999) | 18/15 | 2:02.486William Rasmussen | |||||
| Cal Club 2026 | Grp 2 SM SMX Qual 2 | SM | 17 | Mazda Miata (1999) | 13/17 | 2:08.684 | 2:01.392Ryan Busk | +7.292s (6.01%) | 116.714/17 | 124.6David Mitchell | -8.0 mph (-6.4%) |
| Cal Club 2026 | Grp 2 SM SMX Race 1 | SM | 17 | Mazda Miata (1999) | 12/17 | 2:10.910 | 2:02.750Ryan Busk | +8.160s (6.65%) | 115.713/17 | 126.2Jake Johnson | -10.5 mph (-8.3%) |
| Cal Club 2026 | Grp 2 SM SMX Qual 1 | SM | 17 | Mazda Miata (1999) | 11/17 | 2:07.349 | 2:02.611Nick Leverone | +4.738s (3.86%) | 120.911/17 | 127.3Sam Rezai | -6.4 mph (-5.0%) |
| Cal Club 2026 | Grp A Practice | SM | 17 | Mazda Miata (1999) | 11/13 | 2:11.488 | 2:02.350Tyler Vance | +9.138s (7.47%) | 120.43/13 | 123.1Nicholas Stewart | -2.7 mph (-2.2%) |
| Cal Club 2025 | Grp 2 SM SMX Race 2 | SM | 17 | Mazda Miata (1999) | 11/14 | 2:08.221 | 2:01.800Evan Jacobs | +6.421s (5.27%) | 96.813/14 | 103.9Evan Jacobs | -7.1 mph (-6.8%) |
| Cal Club 2025 | Grp 2 SM SMX Qual 2 | SM | 17 | Mazda Miata (1999) | 13/15 | 2:07.339 | 2:00.831William Wallis | +6.508s (5.39%) | 99.08/15 | 102.2Curtis Zhi | -3.2 mph (-3.1%) |
| Cal Club 2025 | Grp 2 SM SMX Race 1 | SM | 17 | Mazda Miata (1999) | 13/16 | 2:07.598 | 2:01.650Nick Leverone | +5.948s (4.89%) | 95.713/16 | 102.6Sophia Storey | -6.8 mph (-6.7%) |
| Cal Club 2025 | Grp 2 SM SMX Qual 1 | SM | 17 | Mazda Miata (1999) | 14/16 | 2:06.617 | 2:01.608Evan Jacobs | +5.009s (4.12%) | 94.815/16 | 102.2William Wallis | -7.3 mph (-7.2%) |
| Cal Club 2025 | Fri AM | SM | 17 | Mazda Miata (1999) | 6/7 | 1:51.297 | 1:41.720John Stott | +9.577s (9.42%) | 112.72/3 | 153.3John Stott | -40.6 mph (-26.5%) |
| Event | Session | Class | # | Car | Pos | Best lap | Class best | To class best | Trap | Class trap | To class trap |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Cal Club 2022 | Grp 1 SM Race 2 | SM | 17 | Mazda Miata | 11/14 | 2:09.810 | 2:05.933Evan Jacobs | +3.877s (3.08%) | 97.013/14 | 102.6Evan Jacobs | -5.6 mph (-5.5%) |
| Cal Club 2022 | Grp 1 SM Race 1 | SM | 17 | Mazda Miata | 12/15 | 2:10.131 | 2:06.660Evan Jacobs | +3.471s (2.74%) | 96.313/15 | 101.1Curtis Gong | -4.8 mph (-4.7%) |
| Cal Club 2022 | Grp 1 SM Qual 2 | SM | 17 | Mazda Miata | 8/13 | 2:08.042 | 2:05.545Austin Varco | +2.497s (1.99%) | 97.611/13 | 101.0Evan Jacobs | -3.4 mph (-3.3%) |
| Cal Club 2022 | Grp 1 SM Qual 1 | SM | 17 | Mazda Miata | 11/13 | 2:11.256 | 2:06.271Ryan Gutile | +4.985s (3.95%) | 95.412/13 | 100.4Ryan Gutile | -4.9 mph (-4.9%) |
| Cal Club 2022 | Grp 1 SM Practice | SM | 17 | Mazda Miata | 9/12 | 2:09.443 | 2:06.183Austin Varco | +3.260s (2.58%) | 97.612/12 | 102.3Evan Jacobs | -4.6 mph (-4.5%) |
| Buttonwillow Raceway Park 2018 | Grp 2 SM Race 2 | SM | 17 | Mazda Miata | 13/24 | 2:10.399 | 2:04.872Mark Drennan | +5.527s (4.43%) | |||
| Buttonwillow Raceway Park 2018 | Grp 2 SM Race 1 | SM | 17 | Mazda Miata | 15/27 | 2:08.887 | 2:05.500Nick Sommers | +3.387s (2.70%) | |||
| Buttonwillow Raceway Park 2018 | Grp 2 SM Qual 2 | SM | 17 | Mazda Miata | 15/26 | 2:07.740 | 2:04.894Mark Drennan | +2.846s (2.28%) | |||
| Buttonwillow Raceway Park 2018 | Grp 2 SM Qual 1 | SM | 17 | Mazda Miata | 22/25 | 2:11.583 | 2:05.568Mark Drennan | +6.015s (4.79%) | |||
| Buttonwillow Raceway Park 2018 | Grp 2 SM Prac | SM | 17 | Mazda Miata | 16/23 | 2:10.725 | 2:05.578Nick Sommers | +5.147s (4.10%) |
| Event | Session | Class | # | Car | Pos | Best lap | Class best | To class best | Trap | Class trap | To class trap |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Cal Club 2021 | Grp 4 SM Race 2 | SM | 17 | Mazda Miata | 12/14 | 2:11.328 | 2:08.031Tommy McCarthy | +3.297s (2.58%) | 98.712/14 | 102.3Ryan Gutile | -3.6 mph (-3.5%) |
| Cal Club 2021 | Closed Wheel | SM | 17 | Mazda Miata | 2/4 | 2:13.304 | 2:10.573Boris Said Jr. | +2.731s (2.09%) | 97.83/4 | 99.9Giorgio Pierangeli | -2.0 mph (-2.0%) |
| Cal Club 2021 | Grp 4 SM Race 1 | SM | 17 | Mazda Miata | 13/12 | 2:08.066Tommy McCarthy | |||||
| Cal Club 2021 | Grp 4 SM Qual 2 | SM | 17 | Mazda Miata | 8/13 | 2:10.979 | 2:07.797Curtis Gong | +3.182s (2.49%) | 97.68/13 | 99.2Curtis Gong | -1.5 mph (-1.6%) |
| Cal Club 2021 | Grp 4 SM Qual 1 | SM | 17 | Mazda Miata | 8/12 | 2:12.403 | 2:08.797Tommy McCarthy | +3.606s (2.80%) | 97.410/12 | 100.0Boris Said Jr. | -2.6 mph (-2.6%) |
| Cal Club 2021 | Grp 4 SM Practice | SM | 17 | Mazda Miata | 8/11 | 2:14.206 | 2:08.115Jeremy Rutter | +6.091s (4.75%) | 97.58/10 | 100.5Clement Lee | -3.0 mph (-3.0%) |
| Event | Session | Class | # | Car | Pos | Best lap | Class best | To class best | Trap | Class trap | To class trap |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Majors Feb 2016 | Feature Race Provisional Gr 7 | SM | 17 | 19 | 13/20 | 1:39.644 | 1:36.849Dakota Dickerson | +2.795s (2.89%) | |||
| Majors Feb 2016 | Race Saturday OFFICIAL Gr 7 | SM | 17 | 19 | 19/22 | 1:39.701 | 1:36.178Clement Lee | +3.523s (3.66%) | |||
| Majors Feb 2016 | Race Saturday Provisional Gr 7 | SM | 17 | 19 | 19/22 | 1:39.701 | 1:36.178Clement Lee | +3.523s (3.66%) |
| Event | Session | Class | # | Car | Pos | Best lap | Class best | To class best | Trap | Class trap | To class trap |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Majors Jan 2016 | Warm Up | STL | 17 | 19 | 1/2 | 2:06.302 | 1:59.495David Vodden | +6.807s (5.70%) |
#28582 from Alan Leukhardt III · 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.