RULES

Acceptable Tires - Any DOT treaded tire with a minimum TWR of 40 and minimum aspect ratio of 45:

  • Hoosier R7

  • Hoosier Vintage TD

  • Hoosier Street TD and TDR

  • Toyo RA-1

  • Toyo R888

Acceptable tires may be subject to change based on specific sanctioning body rules.


Exceptions will be considered for displacements of 1400cc or less.

Cars should adhere to weight specifications and preparation rules per the 1975 SCCA General Competition Rules.

2022 CSRG rules include updated seat belts with a maximum of two years from date of manufacturer.

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Sports Car Club of America

General Competition Rules Reference

Classic Sports Racing Group (CSRG)