GT4 Tire Selection
#39463 from Roy Lipner · No action required · Minutes (2026-01 Fastrack)
The GT4 cars in T1 have the option to use either Pirelli or Michelin tires if they are using non-DOT approved racing slicks. We
have also allowed T1-GT4 cars to use any DOT approved race tire conforming to the size shown in the spec line.