Please see DIRTcar's website for DIRTcar Late Models Rules.
Brownstown Bullring & I-55 Late Model tire rule:
Right Front, Left Front & Left Rear Tires: Hoosier L/M 2 ONLY, Grooving & Siping Allowed! ----- Right Rear Tire: Hoosier L/M 4 ONLY, Grooving & Siping Allowed -----
L/M 2 – Must Durometer 40 minimum before race
L/M 4 – Must Durometer 60 minimum before race