USAC TECHNICAL BULLETINS

JUNE 21, 2023

TIRE BULLETIN: USAC AMSOIL SPRINT CAR NATIONAL CHAMPIONSHIP

Through July 31: Both new & old Hoosier Medium right rear tires are permitted.

Through July 31: Any Hoosier left rear tire is permitted.

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

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