FOR IMMEDIATE RELEASE: 9/8/2022
As previously announced, Hoosier Racing Tire has discontinued the D20A. As of January 1,
2023, the following tire specifications will be required at all USAC Sanctioned National,
Regional, and Club racing events:
Pavement
Right Front - NY1 A35 - 33
Right Rear - NY1 A35 - 34.5
Left Side - A35 - 31, 32, 32 short
Dirt
Right Front - NY1 A35 or D10 - 33
Right Rear - NY1 A35 or D10 - 34.5
Left Side - A35 - 31, 32, 32 short or D10 - 32
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