ST-X (FIA GT3) •
Team HandWork Challenge was announced to compete in the series, but did not compete as they focus on
2025 Suzuka 1000 km. •
Charlie Fagg was announced to compete in the series with
D'station Racing, but he did not make a single appearance. ===ST-Z (
SRO GT4)=== ===ST-
TCR===
ST-Q The ST-Q class uses development vehicles approved by the STO, similar to the ADAC NLS in Germany.
ST-USA (American produced cars) ST-1 (GTC cars) ST-2 2,400–3,500cc, front-wheel and all-wheel drive vehicles
ST-3 2,400–3,500cc, rear-wheel drive vehicles
ST-4 1,500–2,500cc vehicles
ST-5 == Race results ==