Request to Rebalance Blackwing Cadillac T2 for 2025
#37389 from John Heinricy · Not recommended · Minutes (2025-04 Fastrack)
Thank you for your letter. The top 2 cars at the 2024 T2 runoffs race were significantly faster than the Cadillac Blackwing, by 2 to
2.5 seconds per lap. Because of the total weight, front weight bias and high cg of the Cadillac the bulk of the loss in time is in
braking and corner speeds. Assuming the two front runners are not slowed down significant modifications to the Cadillac are
needed. I am requesting 315 tires maximum. The current 295 tires on a 3800 pound car are not enough tire for this weight. I am
requesting aftermarket shocks and springs with a maximum spring rate of 1000 pounds/inch front and rear to replace the OEM
shocks and springs which are way lower spring rate than the competitors. I am requesting to allow removal of the OEM catalytic
convertors to help reduce the high exhaust temperatures which damage the turbochargers. The trap speeds for the Cadillac,
which is the heaviest car, are in a similar range to the competition and as shown by the winning BMW M2CS Cup racecar which
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had trap speeds on the low end of the top 5 cars, the trap speeds are not that indicative of a fast lap time and winning capability.
Reducing weight on the Blackwing is not feasible under the current rules.