SCCA® Solo classing — unofficial guide
What autocross class is a BMW M3 & M4 (F80/F82, non-CS)?
BSStreetSSTStreet Touring
A stock 2015–2020 BMW M3 & M4 (F80/F82, non-CS) runs in BS (Street) under the 2026 SCCA Solo Rules. Built to Street Touring allowances (within SST tire and wheel limits), it runs SST.
Class by preparation level
| Stock (Street) | BS |
| Street Touring | SST |
| 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 & M4 (F80/F82 chassis; non-CS) (2015-20)' = BS. ST: 'M3 & M4 (F80/F82; non-CS, non-GTS) (2015-20)' = SST. CS versions = AS.
Other BS 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.