
Tickets can be purchased at the gate.
For more information, call the track at (989) 316-6804

DIRTcar Summer Nationals / Summit Modified Nationals
July 22, 2022
Tri-City Motor Speedway
85 Wheeler Rd
Auburn, MI
Event Description
$10,000 to win for Late Models, $1,500 for UMP Modifieds.
Series Racing
Summit Modified Nationals DIRTcar Late Models
Late Model Track Record
12.349 seconds by Dona Marcoullier in 9/2014
To Win Amount
$1,500.00
Feature Laps Length
25
DIRTcar Late Models
To Win Amount
$1,500.00
(989) 316-6804
Track Size & Type
0.375;
Late Model Car Track Record
12.349 seconds by Dona Marcoullier in 9/2014
DIAMOND IN THE SMOOTH: Thirlby Wins First Summit Modified Feature at TCMS
For the third time in as many races, the DIRTcar Summit Racing Equipment Modified Nationals has seen a first-time winner.
Friday night at Tri-City Motor Speedway, Collin Thirlby etched his name into the record books, becoming the 77th different winner in the 12-year history of the series. To do it, Thirlby pressured leader Brian Brindley for over half of the 25-lap event and eventually made the move on him with nine-to-go, taking the lead for good.

“I just followed [Brindley], kept the car straight, kept the tires under me,” Thirlby said. “I saw Shannon Fisk – he was running the bottom, and I think with as many laps as I have around this place, I kinda knew where to go.”
Thirlby is a dealer/builder of the Diamond Race Cars chassis that he drives and has tuned it to his liking for the slick-and-smooth Tri-City track surface, which, coupled with his experience at TCMS, gave him the edge over his competition.
“The biggest thing is that I just have a lot of laps around here,” Thirlby said. “The track gets black-slick, top-to-bottom. These Diamond Race Cars, they’re known to be really good when it gets black like that.”

After working on Brindley since the drop of the green, Thirlby finally slipped by with a great run to his inside out of Turn 4 on Lap 16, and sped off, leading the rest of the distance en route to Victory Lane.
UP NEXT
The DIRTcar Summit Modifieds are back in action Saturday, July 23, at Merritt Speedway in Lake City, MI. If you can’t be at the track, watch all the action live on DIRTVision.
ABBREVIATED RESULTS (view full results)
Feature 25 Laps | 00:12:15.508
- 47-Collin Thirlby[3]; 2. 60-Shannon Fisk[1]; 3. 3B-Brian Brindley[2]; 4. 77-Joe Rokos[12]; 5. 19B-Chad Bauer[4]; 6. 92- Caleb Kill[6]; 7. 50-Chad Bennett[17]; 8. 1*-Wyatt Baker[5]; 9. 10-Jaycob Truemner[16]; 10. 66-Adam Hammer[11]; 11. 60W-Nate Wilbur[14]; 12. 9-Garrett Rons[7]; 13. 15-Brenden Baker[9]; 14. 81-Rick Swartout[18]; 15. 29-Steve Shellenberger[13]; 16. 99B-Brent Banning[8]; 17. 17-Thomas Wilbur[15]; 18. 20-Kevin Miller[10]
POS | Start | +/- | # | Driver | Laps | Behind | Led | Status | Points | Money |
---|---|---|---|---|---|---|---|---|---|---|
1 | 3 | +2 | 47 | Collin Thirlby | 25 | 0.000 | 10 | Running | 75 | $2,000 |
2 | 1 | -1 | 60 | Shannon Fisk | 25 | -1.355 | 2 | Running | 70 | $1,000 |
3 | 2 | -1 | 3B | Brian Brindley | 25 | -4.931 | 13 | Running | 65 | $700 |
4 | 12 | +8 | 77 | Joe Rokos | 25 | -5.014 | 0 | Running | 60 | $500 |
5 | 4 | -1 | 19B | Chad Bauer | 25 | -5.321 | 0 | Running | 55 | $400 |
6 | 6 | 0 | 92 | Caleb Kill | 25 | -5.995 | 0 | Running | 50 | $300 |
7 | 17 | +10 | 50 | Chad Bennett | 25 | -6.604 | 0 | Running | 48 | $280 |
8 | 5 | -3 | 1* | Wyatt Baker | 25 | -9.342 | 0 | Running | 46 | $260 |
9 | 16 | +7 | 10 | Jaycob Truemner | 25 | -9.818 | 0 | Running | 44 | $240 |
10 | 11 | +1 | 66 | Adam Hammer | 25 | -10.878 | 0 | Running | 42 | $220 |
11 | 14 | +3 | 60W | Nate Wilbur | 25 | -14.615 | 0 | Running | 40 | $200 |
12 | 7 | -5 | 9 | Garrett Rons | 25 | -17.355 | 0 | Running | 39 | $175 |
13 | 9 | -4 | 15 | Brenden Baker | 24 | -1 Laps | 0 | Running | 38 | $150 |
14 | 18 | +4 | 81 | Rick Swartout | 24 | -1 Laps | 0 | Running | 37 | $150 |
15 | 13 | -2 | 29 | Steve Shellenberger | 24 | -1 Laps | 0 | Running | 36 | $150 |
16 | 8 | -8 | 99B | Brent Banning | 10 | -15 Laps | 0 | DNF | 35 | $150 |
17 | 15 | -2 | 17 | Thomas Wilbur | 7 | -18 Laps | 0 | DNF | 34 | $150 |
18 | 10 | -8 | 20 | Kevin Miller | 6 | -19 Laps | 0 | DNF | 33 | $150 |
Pos. | Start | +/- | # | Driver | Hometown | Difference |
---|---|---|---|---|---|---|
1 | 1 | 0 | 60 | Shannon Fisk | Lowell, MI | 0.000 |
2 | 2 | 0 | 47 | Collin Thirlby | Traverse City, MI | -281.840 |
3 | 7 | +4 | 1* | Wyatt Baker | Manton, MI | -284.468 |
4 | 5 | +1 | 9 | Garrett Rons | Livonia, MI | -284.964 |
5 | 9 | +4 | 15 | Brenden Baker | Grand Rapids, MI | -285.499 |
6 | 6 | 0 | 66 | Adam Hammer | Traverse City, MI | -285.894 |
7 | 4 | -3 | 29 | Steve Shellenberger | Marshall, MI | -286.093 |
8 | 8 | 0 | 17 | Thomas Wilbur | Freesoil, MI | -289.322 |
9 | 3 | -6 | 50 | Chad Bennett | Caro, MI | -269.142 |
Pos. | Start | +/- | # | Driver | Hometown | Difference |
---|---|---|---|---|---|---|
1 | 3 | +2 | 3B | Brian Brindley | West Branch, MI | 0.000 |
2 | 1 | -1 | 19B | Chad Bauer | Farwell, MI | -121.791 |
3 | 2 | -1 | 92 | Caleb Kill | Mcbain, MI | -123.280 |
4 | 8 | +4 | 99B | Brent Banning | West Branch, MI | -124.255 |
5 | 4 | -1 | 20 | Kevin Miller | Mount Pleasant, MI | -124.878 |
6 | 5 | -1 | 77 | Joe Rokos | Interlochen, MI | -127.607 |
7 | 6 | -1 | 60W | Nate Wilbur | Manistee, MI | -127.686 |
8 | 9 | +1 | 10 | Jaycob Truemner | Imlay, MI | -128.124 |
9 | 7 | -2 | 81 | Rick Swartout | Union City, MI | -129.492 |
POS | Start | Car | Driver | Time | Difference |
---|---|---|---|---|---|
1 | 1 | 60 | Shannon Fisk | 13.608 | 0.000 |
2 | 4 | 47 | Collin Thirlby | 13.726 | -0.118 |
3 | 9 | 50 | Chad Bennett | 13.731 | -0.123 |
4 | 7 | 29 | Steve Shellenberger | 13.942 | -0.334 |
5 | 2 | 9 | Garrett Rons | 14.171 | -0.563 |
6 | 3 | 66 | Adam Hammer | 14.178 | -0.570 |
7 | 6 | 1* | Wyatt Baker | 14.194 | -0.586 |
8 | 5 | 17 | Thomas Wilbur | 14.882 | -1.274 |
9 | 8 | 15 | Brenden Baker | 14.882 | -1.274 |
POS | Start | Car | Driver | Time | Difference |
---|---|---|---|---|---|
1 | 2 | 19B | Chad Bauer | 13.588 | 0.000 |
2 | 7 | 92 | Caleb Kill | 13.895 | -0.307 |
3 | 9 | 3B | Brian Brindley | 13.989 | -0.401 |
4 | 1 | 20 | Kevin Miller | 14.102 | -0.514 |
5 | 8 | 77 | Joe Rokos | 14.130 | -0.542 |
6 | 3 | 60W | Nate Wilbur | 14.244 | -0.656 |
7 | 4 | 81 | Rick Swartout | 14.388 | -0.800 |
8 | 5 | 99B | Brent Banning | 14.395 | -0.807 |
9 | 6 | 10 | Jaycob Truemner | 14.713 | -1.125 |