WhatClassAmIAutocross Classing Guide

SCCA® Solo classing — unofficial guide

What autocross class is a Porsche 911 (997 Carrera family)?

ASStreetSSTStreet Touring

A stock 2005–2011 Porsche 911 (997 Carrera family) runs in AS (Street) under the 2026 SCCA Solo Rules. Built to Street Touring allowances (within SST tire and wheel limits), it runs SST.

From the 2026 rulebook (Appendix A)

Street: '911 (997 Carrera, 4, 4S, GTS) (2005-11)' = AS; 997 GT3/Turbo = SS. ST: '911 Carrera (997) (2005-2012)' = SST.

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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.