SCCA® Solo classing — unofficial guide
What autocross class is a BMW 320i (F30/F31/F34)?
GSStreetBSTStreet Touring
A stock 2014–2019 BMW 320i (F30/F31/F34) runs in GS (Street) under the 2026 SCCA Solo Rules. Built to Street Touring allowances (within BST tire and wheel limits), it runs BST.
Class by preparation level
| Stock (Street) | GS |
| Street Touring | BST |
| 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: '320i (F30/F31/F34) (2014-19)' = GS. ST: '3 Series Turbo (Non-M) (2007-26)' = BST.
Other GS 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.