WhatClassAmIAutocross Classing Guide

SCCA® Solo classing — unofficial guide

What autocross class is a Chevrolet Corvette (C4)?

CSStreetBSTStreet Touring

A stock 1984–1996 Chevrolet Corvette (C4) runs in CS (Street) under the 2026 SCCA Solo Rules. Built to Street Touring allowances (within BST tire and wheel limits), it runs BST.

From the 2026 rulebook (Appendix A)

Street: 'Corvette (C4, all) (1984-96)' = CS. ST: 'Corvette (C4, excl. LT4 engine & ZR1) (1984-96)' = BST.

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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.