SCCA® Solo classing — unofficial guide
What autocross class is a BMW M3/M4 (G80/G82, MP Sports Suspension)?
SSStreet
A stock 2023–2026 BMW M3/M4 (G80/G82, MP Sports Suspension) runs in SS (Street) under the 2026 SCCA Solo Rules.
Class by preparation level
| Stock (Street) | SS |
| Street Touring | — |
| Street Prepared | — |
| Street Modified | SM |
| Prepared | — |
A “—” means the car isn’t listed at that level; a build lands in the least-prepared category its modifications allow.
Also eligible for
XA/XBXtreme Street
From the 2026 rulebook (Appendix A)
Street: 'M3 (with MP Sports Suspension) (G80) (2023-2026)' / 'M4 (with MP Sports Suspension) (G82) (excl. CSL, CS) (2023-2026)' = SS. Without MP suspension = AS.
Other SS cars
Unofficial guidance verified against the 2026 SCCA® Solo® Rules — always confirm against the current rulebook before competing. Classing data cites the exact Appendix A wording it relies on. Spot an error? Report it on GitHub.