BoP Lab / Buttonwillow Raceway Park

STL + SRF3 at Buttonwillow Raceway Park

No mapCal Club 2024

This track has been raced on 2 configurations (The Circuit, 2.57 mi; 2.92 mi). Laps on different configurations are not comparable, so only events on the 2.57 mile layout are shown; switch above to see the others.

One run is left out as not that car's own laps (far quicker than the car managed in any other session and than anyone else in its class all week; usually a swapped transponder): Tom Burt in Cal Club 2025 PM (1:42.300; the car's best in any other session was 1:52.334 and the rest of the class's best all week 1:50.233).

Pos	Car	Driver	Class	#	Lap	Theoretical	Qual	Race	5-lap stint	Consistency	Trap	S1	S2	S3
1	SCCA Ent SRF3	Caleb Shrader	SRF3	99	1:50.233 B-Q2	1:49.967	1:50.233 B-Q2	1:50.825 B-R2	1:51.100 B-R2	+0.469 B-R2	133.6 A-Q2	30.136 B-P	31.672 B-P	48.159 B-P
2	SCCA Ent SRF3	Calvin Harris	SRF3	42	1:50.359 B-Q2	1:50.339	1:50.359 B-Q2	1:51.127 B-R2	1:51.474 B-R2	+0.477 B-R2	112.4 B-Q2	30.212 B-Q2	31.791 B-Q2	48.336 B-Q2
3	SCCA Ent SRF3	John Black	SRF3	17	1:50.578 B-Q2	1:50.265	1:50.578 B-Q2	1:50.980 B-R1	1:51.262 B-R1	+0.649 B-R1	134.8 A-P	30.260 B-Q2	31.841 B-Q1	48.164 B-Q1
4	SCCA Ent SRF3	Todd Harris	SRF3	24	1:50.578 B-Q2	1:50.578	1:50.578 B-Q2	1:51.673 B-R1	1:51.973 B-R2	+0.681 B-R2	110.6 B-R1	30.259 B-Q2	31.845 B-Q2	48.474 B-Q2
5	SCCA Ent SRF3	Taylor Harris	SRF3	12	1:50.673 B-Q2	1:50.589	1:50.673 B-Q2	1:51.241 B-R2	1:51.430 B-R2	+0.243 B-R2	114.1 B-R1	30.347 B-Q2	31.916 B-Q2	48.326 B-Q2
6	SCCA Ent SRF3	Mike Miserendino	SRF3	11	1:50.810 B-Q2	1:50.282	1:50.810 B-Q2	1:51.796 B-R2	1:52.073 B-R2	+0.352 B-R2	135.7 A-Q2	30.282 B-Q2	32.022 B-R1	47.978 A-P
7	SCCA Ent SRF3	Steve Fogg	SRF3	21	1:50.892 B-Q2	1:50.770	1:50.892 B-Q2	1:51.698 B-R1	1:51.962 B-R2	+0.636 B-R2	129.9 A-R1, A-Q2	30.379 B-Q2	32.043 B-Q2	48.348 B-Q2
8	SCCA Ent SRF3	Asad Nikadambaev	SRF3	144	1:50.913 A-Q2	1:50.913	1:50.913 A-Q2	1:52.070 A-R2	1:52.270 A-R2	+0.491 A-R2	136.8 A-Q1	30.477 A-Q2	31.965 A-Q2	48.471 A-Q2
9	SCCA Ent SRF3	TJ Acker	SRF3	62	1:51.005 B-Q2	1:50.844	1:51.005 B-Q2	1:51.755 B-R2	1:52.016 B-R1	+0.510 B-R1	110.3 B-Q1	30.314 B-Q2	32.118 B-Q2	48.412 B-Q2
10	SCCA Ent SRF3	Robert Edmison	SRF3	22	1:51.118 B-P	1:50.565	1:51.136 B-Q2	1:51.601 B-R2	1:52.033 B-R2	+1.171 B-R2	136.5 A-P	30.175 B-Q1	31.846 B-Q1	48.544 B-Q1
11	SCCA Ent SRF3	EJ Abed	SRF3	27	1:51.304 B-Q2	1:51.214	1:51.304 B-Q2	1:52.103 B-R2	1:52.228 B-R2	+0.387 B-R2	136.8 A-Q1	30.360 B-Q2	32.113 B-Q2	48.741 B-Q2
12	SCCA Ent SRF3	Sean O'Boyle	SRF3	67	1:51.453 B-P	1:51.248	1:51.799 B-Q2	1:52.231 B-R2	1:52.285 B-R2	+0.523 B-R2	135.9 A-R2	30.363 B-P	32.200 B-P	48.685 B-P
13	Mazda MX-5	Jared Korth	STL	27	1:51.665 B-P	1:51.645		1:58.002 A-R2	1:58.825 A-R2	+1.245 A-R2	134.8 A-R1, A-R2	30.616 B-P	32.218 B-P	48.811 B-P
14	SCCA Ent SRF3	Jon McClintock	SRF3	23	1:51.704 B-Q2	1:51.653	1:51.704 B-Q2	1:52.510 B-R2	1:52.779 B-R2	+0.754 B-R2	134.4 A-R1	30.416 B-Q2	32.353 B-P	48.884 B-Q2
15	SCCA Ent SRF3	Andre Perra	SRF3	77	1:51.816 B-P	1:51.816	1:52.314 B-Q2				111.0 B-Q2	30.534 B-P	32.284 B-P	48.998 B-P
16	SCCA Ent SRF3	Eric Hand	SRF3	76	1:51.935 B-P	1:51.718	1:52.618 B-Q1	1:52.736 B-R2	1:53.362 B-R2	+1.041 B-R2	132.2 A-Q2	30.479 B-Q2	32.325 B-P	48.914 B-P
17	SCCA Ent SRF3	Paul Marino	SRF3	14	1:52.092 B-P	1:51.882	1:52.338 B-Q1	1:52.816 B-R1	1:53.859 B-R2	+0.588 B-R2	138.9 A-Q2	30.539 B-Q1	32.391 B-P	48.952 B-Q1
18	SCCA Ent SRF3	Michael Neumeyer	SRF3	9	1:52.163 A-Q2	1:52.058	1:52.163 A-Q2	1:53.546 A-R1	1:53.921 A-R2	+0.745 A-R2	133.4 A-Q1, A-Q2	30.713 A-Q2	32.218 A-Q2	49.127 A-Q1
19	SCCA Ent SRF3	Graham Woodd	SRF3	52	1:52.194 B-Q2	1:51.959	1:52.194 B-Q2	1:52.959 B-R2	1:53.231 B-R2	+0.687 B-R2	112.4 B-Q1	30.631 B-Q2	32.483 B-Q1	48.845 B-Q2
20	SCCA Ent SRF3	Mark Ballengee	SRF3	197	1:52.334 B-Q2	1:51.955	1:52.334 B-Q2	1:52.715 B-R1	1:53.509 B-R1	+1.364 B-R1	137.8 A-Q1	30.821 B-R1	32.309 B-R1	48.825 B-Q2
21	SCCA Ent SRF3	Tom Burt	SRF3	45	1:52.334 B-Q2	sector data unreliable	1:52.334 B-Q2	1:52.708 B-R1	1:53.274 B-R2	+0.810 B-R2	136.6 A-Q1	30.694	32.318	44.841
22	SCCA Ent SRF3	Umberto Milletti	SRF3	34	1:52.385 B-Q1	1:51.777	1:52.385 B-Q1	1:52.925 B-R1	1:53.355 B-R2	+0.505 B-R2	136.1 A-R2	30.406 B-Q1	32.405 A-Q2	48.966 B-R1
23	SCCA Ent SRF3	Lee Douglas	SRF3	2	1:52.386 B-P	1:51.976	1:52.580 B-Q1	1:53.371 B-R1	1:54.213 B-R1	+1.557 B-R1	115.4 B-P	30.589 B-P	32.398 B-Q1	48.989 B-Q1
24	SCCA Ent SRF3	Rob Pielsticker	SRF3	33	1:52.435 A-Q2	1:52.394	1:52.435 A-Q2	1:53.632 A-R2	1:53.816 A-R1	+0.453 A-R1	136.8 A-P	30.944 A-Q2	32.477 A-Q2	48.973 A-Q2
25	SCCA Ent SRF3	Paul Goudy	SRF3	127	1:52.763 B-P	1:52.211	1:53.151 B-Q2	1:53.038 B-R2	1:53.595 B-R2	+0.957 B-R2	138.5 A-Q1	30.530 B-P	32.469 B-R2	49.212 B-P
26	SCCA Ent SRF3	Maguire Dickerhoof	SRF3	43	1:52.777 A-Q2	1:52.777	1:52.777 A-Q2	1:53.722 A-R2	1:54.380 A-R2	+1.053 A-R2	137.6 A-Q2	31.056 A-Q2	32.628 A-Q2	49.093 A-Q2
27	SCCA Ent SRF3	Chris Strand	SRF3	49	1:52.795 B-P	1:52.475	1:55.168 B-Q1	1:56.794 B-R2	1:58.272 B-R2	+2.172 B-R2	111.6 B-P	30.631 B-P	32.583 B-P	49.261 B-P
28	SCCA Ent SRF3	Tom Miserendino	SRF3	15	1:52.801 B-P	1:52.302	1:53.154 B-Q2	1:53.280 B-R1	1:53.865 B-R2	+0.398 B-R2	130.1 A-Q1	30.778 B-Q2	32.383 B-P	49.141 B-Q1
29	Mazda Miata	Wesley Mollno	STL	11, 111	1:52.983 B-P	1:52.983	1:59.582 A-Q1	1:59.163 A-R1	1:59.870 B-R2	+0.510 B-R2	133.4 A-Q1	30.838 B-P	33.020 B-P	49.197 B-P
30	SCCA Ent SRF3	Vince Balch	SRF3	65	1:53.036 B-Q2	1:53.036	1:53.036 B-Q2	1:54.674 B-R1	1:55.749 B-R1	+1.552 B-R1	133.4 A-Q2	30.700 B-Q2	32.651 B-Q2	49.685 B-Q2
31	Mazda Miata	Jon Davies	STL	67	1:53.071 B-P	1:53.071	1:59.281 B-Q1	1:59.121 B-R1	1:59.683 B-R1	+1.145 B-R1	127.3 B-P	30.815 B-P	32.820 B-P	49.536 B-P
32	SCCA Ent SRF3	Jay Rosenthal	SRF3	55	1:53.237 B-Q1	1:52.918	1:53.237 B-Q1	1:53.706 B-R1	1:54.392 B-R2	+0.535 B-R2	136.6 A-Q1	31.035 B-Q1	32.580 B-Q1	49.303 B-Q2
33	SCCA Ent SRF3	Clayton Powers	SRF3	70	1:53.237 B-P	1:52.990	1:53.631 A-Q2	1:54.845 A-R1	1:55.266 A-R1	+0.979 A-R1	134.1 A-Q2	30.988 B-P	32.714 A-Q2	49.288 B-P
34	Mazda RX-8	David LeCren	STL	2	1:53.515 B-P	1:53.253	2:09.464 A-Q2	2:11.372 A-R2	2:11.978 A-R2	+5.025 A-R2	121.0 A-Q2	31.217 B-P	32.486 B-P	49.550 B-P
35	SCCA Ent SRF3	John Arscott	SRF3	81	1:53.623 B-Q2	1:53.288	1:53.623 B-Q2	1:54.918 B-R2	1:55.509 B-R2	+0.858 B-R2	108.7 B-Q1	30.895 B-Q1	32.634 B-Q2	49.759 B-Q2
36	Mazda Miata	Sayo Haraishi	STL	34	1:54.120 B-P	1:54.019	2:08.265 B-Q1	2:09.190 B-R1	2:09.557 B-R1	+0.759 B-R1	105.6 B-P	31.129 B-P	33.359 B-P	49.531 B-P
37	SCCA Ent SRF3	Michael Moshay	SRF3	16	1:54.242 B-R2	1:53.982	1:54.826 B-Q2	1:54.242 B-R2	1:54.930 B-R2	+1.338 B-R2	129.8 A-Q2	31.118 B-R2	33.024 B-R2	49.840 B-R2
38	Mazda MX-5	Ricardo Arruda	STL	16	1:54.343 B-P	1:54.343	2:00.717 B-Q2	2:01.410 B-R1	2:02.207 B-R1	+0.929 B-R1	104.3 B-P	31.248 B-P	32.888 B-P	50.207 B-P
39	Mazda MX-5	Gavin Wardle	STL	169	1:54.845 A-R1	sector data unreliable	1:58.292 A-Q2	1:54.845 A-R1	1:59.598 A-R2	+0.868 A-R2	132.7 A-R2	8.264	33.984	51.822
40	SCCA Ent SRF3	Denny Fosdick	SRF3	69	1:54.932 B-P	1:54.830	1:55.479 B-Q1	1:56.082 A-R2	1:57.089 A-R1	+1.298 A-R1	128.4 A-P	31.449 B-P	33.388 A-Q1	49.993 B-P
41	Mazda Miata	Nick Leverone	STL	137, 37	1:54.963 B-Q2	1:54.891	1:54.963 B-Q2	1:55.682 B-R1	1:56.512 B-R1	+1.038 B-R1	106.0 B-Q1	31.458 B-Q2	32.979 B-Q2	50.454 B-Q2
42	SCCA Ent SRF3	Doug Stewart	SRF3	71	1:55.021 B-P	1:54.732	1:55.878 B-Q1	1:55.200 B-R2	1:55.941 B-R2	+1.304 B-R2	130.4 A-Q1	31.406 B-P	33.145 B-R2	50.181 B-P
43	Honda Civic Si	Jonathan Lugod	STL	61	1:56.438 B-R1	1:56.128	1:57.331 B-Q2	1:56.438 B-R1	1:57.403 B-R1	+1.528 B-R1	106.8 B-P	31.787 B-P	33.468 B-P	50.873 B-P
44	SCCA Ent SRF3	Don Palla	SRF3	37, 30	1:56.524 B-Q2	1:55.911	1:56.524 B-Q2	1:57.682 A-R2	1:58.063 A-R2	+0.973 A-R2	125.7 A-R2	31.402 B-Q2	33.317 B-Q2	51.192 B-R1
45	SCCA Ent SRF3	David Roth	SRF3	7	1:56.755 A-R2	1:56.607	1:57.730 A-Q2	1:56.755 A-R2	1:57.810 A-R2	+2.186 A-R2	132.7 A-P	32.055 A-Q2	33.685 A-R2	50.867 A-R2
46	Honda Prelude	Carl Young	STL	23	1:56.961 B-R1	1:56.631	1:57.917 B-Q2	1:56.961 B-R1	1:57.759 B-R1	+1.599 B-R1	104.5 B-Q2	31.994 B-R1	33.745 B-R1	50.892 B-R1
47	SCCA Ent SRF3	Alice Kutsyy	SRF3	111	1:57.255 B-P	1:57.236	1:59.043 B-Q1	1:59.139 B-R1	2:01.752 B-R1	+6.376 B-R1	104.7 B-R1	32.212 B-P	33.871 B-P	51.153 B-P
48	Mazda MX-5	Ryan Gutile	STL	116	1:57.404 B-Q1	1:57.004	1:57.404 B-Q1	1:57.483 B-R1	1:58.542 B-R1	+1.371 B-R1	128.4 A-Q2	31.829 B-R1	33.695 B-Q1	51.480 B-R1
49	Mazda Miata	Amy Mills	STL	114	1:57.757 A-Q2	1:57.494	1:57.757 A-Q2	1:58.239 B-R2	1:58.840 B-R2	+1.462 B-R2	122.6 A-R2	32.321 B-Q2	33.780 A-Q2	51.393 A-Q2
50	SCCA Ent SRF3	Gary Knesevitch	SRF3	63	1:57.788 B-R2	1:57.025	1:58.429 B-Q2	1:57.788 B-R2	1:58.928 B-R2	+2.951 B-R2	103.5 B-R1	32.046 B-R2	34.221 B-R1	50.758 B-R2
51	Mazda MX-5	Bryce Johnson	STL	15, 13	1:58.716 A-Q2	1:58.419	1:58.716 A-Q2	1:59.496 A-R2	1:59.874 A-R2	+0.878 A-R2	136.6 A-Q1	32.248 A-Q1	34.104 A-Q2	52.067 A-Q2
52	Mazda Miata	Patrick Drinkwine	STL	151	1:59.239 B-Q1	1:58.754	1:59.239 B-Q1	2:00.132 B-R1	2:00.548 B-R1	+0.505 B-R1	106.6 B-P	32.503 B-P	34.167 B-P	52.084 B-P
53	Mazda MX-5 (2015)	Adrian Comstock	STL	25	2:00.239 A-Q2	2:00.015	2:00.239 A-Q2	2:00.722 A-R1	2:01.250 A-R2	+0.672 A-R2	133.0 A-R2	32.847 A-R2	34.493 A-Q2	52.675 A-Q2
54	Mazda MX-5	Andy Chittum	STL	99	2:00.296 A-Q2	1:59.684	2:00.296 A-Q2	2:00.787 A-R1	2:01.366 A-R1	+1.093 A-R1	132.9 A-R2	32.848 A-Q1	34.467 A-Q2	52.369 A-Q2
55	Mazda Miata	Richard James	STL	91	2:02.318 B-R1	2:01.786	2:02.441 A-Q1	2:02.318 B-R1	2:03.149 B-R2	+0.867 B-R2	126.7 A-R1	32.990 B-R1	35.132 A-Q1	53.664 B-R1
56	Mazda Miata	Todd Launchbaugh	STL	73	2:02.759 B-R1	2:02.624		2:02.759 B-R1	2:03.974 B-R1	+1.599 B-R1	98.5 B-R1	33.210 B-R1	35.059 B-R1	54.355 B-R1
57	Mazda Miata	Ayden Vaillancour	STL	88	2:03.022 B-R1	2:02.301	2:03.653 B-Q2	2:03.022 B-R1	2:03.841 B-R1	+0.936 B-R1	100.4 B-P	33.072 B-P	35.168 B-P	54.061 B-R1
58	Mazda Miata	Lauren Lewis >115%	STL	45	2:17.307 A-R1	2:16.162		2:17.307 A-R1	2:18.705 A-R1	+1.938 A-R1	108.6 A-R1	36.821 A-R1	39.026 A-R1	1:00.315 A-R2
59	Acura integra	Jack McEachern >115%	STL	21	2:24.310 B-Q2	2:22.511	2:24.310 B-Q2	2:24.550 B-R2	2:32.162 B-R1	+2.229 B-R1	77.6 B-Q1	38.960 B-Q1	41.141 B-Q2	1:02.410 B-R2

One row per driver and car (a driver who changed cars has a row for each). Each cell is that driver's best in that car across the selected events, with the session it was set in. Best 5-lap stint is the mean of the driver's quickest five consecutive race laps, and consistency is how far their median race lap sat behind their best in that race (small is a driver who does it every lap); both come from the race with the best stint. The fastest in each column is purple, and a car whose best lap is more than 115% of the fastest in its class is greyed (marked ">115%" beside the driver) and left out of the colour scale. Click a column to sort, a row to highlight it. Theoretical lap is the sum of the best sectors, whichever laps they came from, and never slower than the best lap (where a car's fastest laps were recorded without sector times, its best lap is used). The 115% mark is about the car's best lap only: a car whose best lap is within 115% of the fastest in its class is never marked. Greyed sectors with no theoretical lap mean the sector times on file do not add up to a believable lap. Letters refer to the events above; Q is qualifying, R a race.

Sectors

S1 SF → IM1 0.65 mi
S2 IM1 → IM2 0.75 mi
S3 IM2 → SF 1.17 mi
Spd In → Out 0.03 mi

Sectors are numbered in lap order from start/finish, whatever each event's timing called them; the loop names are SCCA timing's.

By car

Car	Class	Drivers	Lap	Qual	Race	Trap	S1	S2	S3
SCCA Ent SRF3	SRF3	38	1:50.233Caleb Shrader	1:50.233Caleb Shrader	1:50.825Caleb Shrader	138.9Paul Marino	30.136Caleb Shrader	31.672Caleb Shrader	44.841Tom Burt
Mazda Miata	STL	17	1:51.665Jared Korth	1:54.963Nick Leverone	1:54.845Gavin Wardle	136.6Bryce Johnson	8.264Gavin Wardle	32.218Jared Korth	48.811Jared Korth
Mazda MX-5	STL	6	1:51.665Jared Korth	1:57.404Ryan Gutile	1:54.845Gavin Wardle	136.6Bryce Johnson	8.264Gavin Wardle	32.218Jared Korth	48.811Jared Korth
Mazda Miata	STL	10	1:52.983Wesley Mollno	1:54.963Nick Leverone	1:55.682Nick Leverone	133.4Wesley Mollno	30.815Jon Davies	32.820Jon Davies	49.197Wesley Mollno
Mazda MX-5 (2015)	STL	1	2:00.239Adrian Comstock	2:00.239Adrian Comstock	2:00.722Adrian Comstock	133.0Adrian Comstock	32.847Adrian Comstock	34.493Adrian Comstock	52.675Adrian Comstock
Mazda RX-8	STL	1	1:53.515David LeCren	2:09.464David LeCren	2:11.372David LeCren	121.0David LeCren	31.217David LeCren	32.486David LeCren	49.550David LeCren
Honda Civic Si	STL	1	1:56.438Jonathan Lugod	1:57.331Jonathan Lugod	1:56.438Jonathan Lugod	106.8Jonathan Lugod	31.787Jonathan Lugod	33.468Jonathan Lugod	50.873Jonathan Lugod
Honda Prelude	STL	1	1:56.961Carl Young	1:57.917Carl Young	1:56.961Carl Young	104.5Carl Young	31.994Carl Young	33.745Carl Young	50.892Carl Young
Acura integra	STL	1	2:24.310Jack McEachern	2:24.310Jack McEachern	2:24.550Jack McEachern	77.6Jack McEachern	38.960Jack McEachern	41.141Jack McEachern	1:02.410Jack McEachern

The best any driver of each car managed across the selected events, with who set it. Spellings and model years of the same car are grouped; click a row marked ▸ to see each version. Grouping is worked out from the names, so tell us if two cars are wrongly merged or split.

Rule changes between these events

Cal Club 2024 → Cal Club 2025 2024-02-23 to 2025-02-22

2024-06-01 SRF3 SRF3 Alternator Pulley Update In

#36095 from Robey Clark · Rule change · TB 24-06 (2024-06 Fastrack)

fasterSRF3 alternator pulley minimum weight reduced from 12 oz to 11 oz.

SFR3, GCR section 9.1.8.D.2.H.17, change as follows:
"Alternator Pulley: P/N G902130, or P/N G902130A, or P/N G902131 (six row). 12 11 oz minimum weight."

2024-08-01 SRF3 Update Rain Tire Rule and Hoosier Decal Placement

#36436 from Robey Clark · Rule change · TB 24-08 (2024-08 Fastrack)

slowerSRF wet tires: P185/60R13 H20/W2 option removed; P185/65R13 W2 front now required with P205/60R13 W2 rear.

In SRF, GCR section 9.1.8.D.1.X.f, change as follows:
"Wet:
~~Front – Hoosier P/N 46100 P185/60R13 H20 or W2~~
~~Rear – Hoosier P/N 46105 P205/60R13 H20 or W2~~
~~Ground clearance is 2.5” with driver as raced when P185/60R13 (H20 or W2) tires are used.~~
OR
Front – Hoosier P/N 46101 P185/65R13 W2
Rear – Hoosier P/N 46105 P205/60R13 W2

Show 8 more lines

1. It is forbidden to regroove tires.
2. The use of tire warmers or cooling methods other than natural air convection or conduction is prohibited. The penalty for
violation will be the loss of qualifying times and/or the disqualification of race results.
3. Hoosier SRF/SRF3 Decal Placement:
Four (4) "Hoosier" decals are required in the following locations: Two (2) 11" X 3" decals on the vertical plane of the front nose to
the outside of the cooling opening on each side and two (2) 18" X 5" decals, one on each side of the engine cover or above the
rear wheel openings on the vertical plane. Hoosier decals are available, free of charge, from all Hoosier tire distributors including
SCCA Enterprises."

2024-09-01 SRF3 Update to Letter 36619 with new Hoosier Contingency Decal Info

#36624 from Robey Clark · Rule change · TB 24-09 (2024-09 Fastrack)

neutralSRF Hoosier decal requirement reduced from four decals in specific locations to three decals with simpler placement rules.

In SRF, GCR section 9.1.8.D.1.X.f.3, change as follows:
"~~Four (4) "Hoosier" decals are required in the following locations: Two (2) 11" X 3" decals on the vertical plane of the front nose~~
~~to the outside of the cooling opening on each side and two (2) 18" X 5" decals, one on each side of the engine cover or above the~~
~~rear wheel openings on the vertical plane. Hoosier decals are available, free of charge, from all Hoosier tire distributors including~~
~~SCCA Enterprises~~ Per Hoosier's contingency program, three (3) decals are required to qualify for contingency awards. One (1)
decal must be located on each side of the car and one (1) decal must be visible on the front."

2024-10-01 SRF3 Update SRF3 Air Filter Rule

#36681 from Robey Clark · Rule change · TB 24-10 (2024-10 Fastrack)

unclearSRF3 air filter rule removes K&N RC-9160 option, leaving only P/N WM301020 allowed.

In SRF, GCR section 9.1.8.D.2.H.23, change as follows:
"Air Filter: P/N WM301020 ~~or K&N RC-9160~~"

2024-10-01 SRF3 Update SRF Brake Rotor Thickness

#36687 from Robey Clark · Rule change · TB 24-10 (2024-10 Fastrack)

slowerSRF brake rotor minimum thickness increases from 12.20mm to 13.25mm, Wilwood vented rotor P/N 800065.

In SRF, GCR section 9.1.8.D.1.X.g, change as follows:
"Brakes: Hawk Blue 9012 pads P/N 801993 must be used. Wilwood vented rotor P/N 800065 ~~shall~~ must be used as delivered with
no machining of any kind. Minimum thickness ~~12.20mm (0.481”)~~ 13.25mm (0.522”)."

2024-10-01 SRF3 Hoosier Tire Decal Placement

#36739 from Robey Clark · Rule change · TB 24-10 (2024-10 Fastrack)

neutralSRF3 Hoosier logo placement changes from four decals to three decals in different locations.

In SRF, GCR section 9.1.8.D.2.B, change as follows:
"Mandatory identification: "SRF3" near the side car numbers. "~~Hoosier" logo (4) on both sides front lower outer corners of the~~
~~nose and each side of the tail.~~ Three (3) "Hoosier" logos, one (1) on each side of the car and one (1) on the center front of the car."

2024-12-01 STL Request to Remove Miata Hubs from General category

#37138 from Christopher Childs · Rule change · TB 24-12 (2024-12 Fastrack)

neutralSTL/STU: 90-05 Mazda Miata alternate front wheel hubs moved from General to specific part approval.

In GCR, Section 9.1.4.M.18., change as follows:
"18. Allow alternate front wheel front hubs, Mazda Motorsports Development Part #0000-04-5HUB-S1, for the 90-05 Mazda
Miata~~: Mazda Motorsports Development Part #0000-04-5HUB-S1~~."

Cal Club 2025 → Cal Club 2026 2025-02-22 to 2026-02-21

2025-04-01 SRF3 Driver Safety & Comfort

#37966 from Robey Clark · Rule change · TB 25-04 (2025-04 Fastrack)

neutralSRF drivers with disabilities may modify seat and controls for safety and comfort with approval and logbook notation.

In SRF, GCR section 9.1.8.D.1.D, add the following:
"f. Driver Safety and Comfort modifications to seat and controls for drivers with disabilities may be made only by approval. These
modifications must be reported to SCCA Enterprises and noted in the car logbook. The modifications are approved only for the
noted driver with disabilities. If the car is used by or sold to another driver, it must be returned to the previous standard
configuration."

2025-04-01 SRF3 Update SADEV transmission specs

#37992 from Club Racing Board · Rule change · TB 25-04 (2025-04 Fastrack)

neutralSRF SADEV-SRF3 6-speed sequential transmission gear ratios wording clarified, effective 2025-04-01.

In SRF, GCR section 9.1.8.D.2.K, change as follows:
"OR
SADEV-SRF3 6-Speed Sequential ~~(beginning~~ from Oct. 4, 2021 onward):
1st 12-36 3.0000 : 1
2nd 15-31 2.0667 : 1
3rd 18-28 1.5556 : 1
4th 22-28 1.2727 : 1
5th 24-26 1.0833 : 1

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6th 25-23 0.9200 : 1
Final Drive Ratio: 15-48 3.20"

2025-05-01 STL E&O: SMX Allowance in STL

#37945 from Greg Amy · Rule change · TB 25-05 (2025-05 Fastrack)

unclearSTL Mazda MX5 Challenge minimum weight now references GCR 9.1.7.1 instead of 2500 lbs; spec components removed, only alternative tires allowed.

In STL Spec Lines, Table B, Mazda Spec MX5 Challenge, change as follows:
Minimum Weight: "~~2500~~ See 9.1.7.1."
Notes: "~~Mazda MX5 Challenge car must utilize the following components: Roush CNC cylinder head 0000-01-5300,Mahle~~
~~standard or +0.005 0000-01-5310, OEM camshaft, 11:1 compression ratio, header 0000-06-5407-NC, exhaust 0000-06-5427-NC,~~
~~cold air intake 0000- 06-5150-KT, ECU flash 0000-01-5379, Pagid front brake pads 0000-03-5104-SP or endurance pads 0000-03-~~
~~5104-EN, Pagid rear brake pads 0000-03-5114-SP or endurance pads 0000-03-5114-EN, Penske front shock 0000-04-5291-SA,~~
~~Penske rear shock 0000-04-5292-SA, Penske rear mount kit 0000-04-5358, Front mount kit 0000-04-5359, Front offset bushing~~
~~0000-04-5407-NC, Eibach front springs 0000-04-9700-08, Eibach rear springs 0000-04-9400-07, Eibach helper springs 0000-04-~~

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~~9926, Eibach front sway bar 0000-04-5306-FT, Eibach rear sway bar 0000-04-5306-RR, Interior finish panels 0000-07-5822, C&R~~
~~radiator/oil cooler assembly 0000-01-5504-CR, Oil cooler adapter and lines 0000-01-5511-KT, ACT clutch 0000-02-5004-G6,~~
~~wheels 17x8 #0000-04-5706-GM, # 0000- 04-5706-SL, and Toyo RR 235-40-17 dry, Toyo RA1 235-40-17 wet. Alternative tires on~~
~~17x7 wheels per STL rules. No other Super Touring modifications or allowances permitted except as noted in this spec line.~~ Must
conform completely to GCR 9.1.7.1, except alternative tires (only) per STL regs allowed."

Applies to Mazda Miata on this page: Jared Korth, Ricardo Arruda, Gavin Wardle, Ryan Gutile, Bryce Johnson, Andy Chittum, Adrian Comstock

2025-08-01 STL Lotus Weight Reduction

#38772 from Club Racing Board · Rule change · TB 25-08 (2025-08 Fastrack)

fasterSTL/STU Lotus weight reduced: Evora GT4 to 2700 lbs, Elise Cup R to 2250 lbs, Elise/Exige SC to 2450-2550 lbs.

In 9.1.2. GT2/ST Spec Lines, Lotus Evora GT4, change Weight as follows:
"~~2750~~ 2700"
In STU Table B: Alternate Vehicle and Engine Allowances, change Weight as follows:
Lotus Elise Cup R: "~~2300~~ 2250"
Lotus Elise SC/ Lotus Exige SC: ~~"2300~~ 2550
~~2500~~ 2450"

2025-09-01 SRF3 SRF Rule Updates

#38853 from Robey Clark · Rule change · TB 25-09 (2025-09 Fastrack)

neutralSRF3 brakes restructured: Hawk Blue 801993 pads, Wilwood 800065 rotors only; adds Girling 880358, Wilwood 880357, Tilton 880360 master cylinders.

Effective 9/1/25 in SRF, GCR section 9.1.8.D.1.V.ff, add the following:
"SRF3 Oil Cooler, P/N G480503 may be used as mounted per the GEN3 Assembly Manual. No fan permitted for SRF. HD Oil
Cooler kit P/N G1148500 may be used as mounted per the GEN3 Conversion Manual."
Effective 9/1/25 in SRF, GCR section 9.1.8.D.X.g, change as follows:
"Brakes: ~~Hawk Blue 9012 pads P/N 801993 must be used. Wilwood vented rotor P/N 800065 must be used as delivered with no~~
~~machining of any kind. Minimum thickness 13.25mm (0.522”). The Renault Alliance solid front rotors may not be used. Rubber~~
~~caliper bushings may be replaced with bronze bushings P/N 1196185 or P/N 1196185. Original caliper pistons may be replaced~~
~~with vented caliper piston P/N 1196184; no other modification allowed. Wilwood caliper with bracket universal fit P/N 800038~~

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~~may be used as delivered with no modification of any kind. Wilwood knock back spring (2.63 lbs.) P/N 800045 may be used as~~
~~delivered with no modification of any kind; maximum of one spring per caliper.~~
1. Hawk Blue pads P/N 801993 only
2. Wilwood Vented Rotor P/N 800065 only, as delivered, with no machining of any kind. Minimum thickness 13.25mm (0.522")
3. Wilwood universal caliper Kit P/N 1180008 as delivered, caliper only P/N 800038; Wilwood knock back spring P/N 800045
may be used as delivered, with no machining of any kind, and only one spring per caliper
4. Renault caliper rubber bushings may be replaced with bronze bushings P/N 1196185 or P/N 1196185A
5. Renault caliper piston may be replaced with P/N 1196184 vented piston as delivered, with no machining of any kind
6. Girling .750" Master Cylinder P/N 880358 as delivered, with no machining of any kind
7. Wilwood .750" Master Cylinder P/N 880357 as delivered, with no machining of any kind
8. Tilton .750" Master Cylinder P/N 880360 as delivered, with no machining of any kind"

2025-10-01 SRF3 Add HD Oil Cooler

#38979 from Robey Clark · Rule change · TB 25-10 (2025-10 Fastrack)

neutralSRF3 adds HD Oil Cooler P/N G1148500 as alternative to standard cooler P/N G480503.

In SRF, GCR section 9.1.8.D.1.V.ff, change as follows:
"SRF3 Oil Cooler, P/N G480503 or HD Oil Cooler P/N G1148500 may be used as mounted per the GEN3 Assembly Manual. No fan
permitted for SRF. ~~HD Oil Cooler kit P/N G1148500 may be used as mounted per the GEN3 Conversion Manual.~~"

2026-01-01 STL Weight adjustment for STL

#39579 from Super Touring Committee · Rule change · TB 26-01 (2026-01 Fastrack)

slowerSTL minimum weights increase across all classes, 1300 cc gains 195 lbs to 1950, up to 1850 cc at 2500.

In GCR, Section 9.1.4.2.H.1. change Minimum Weight on chart as follows:

A specification table follows in the original; it is not shown here.

What the rules allowed changed as listed; this does not say what any particular car ran.