TIRE BULLETIN: USAC AMSOIL SPRINT CAR NATIONAL CHAMPIONSHIP

MAY 8, 2023

Through June 30: Both new & old Hoosier Medium right rear tires are permitted.

Through June 30: Any Hoosier left rear tire is permitted.

Starting July 1: Only new Hoosier Medium right rear tires are permitted.

Starting July 1: Only Hoosier SC12 left rear tire is permitted.