Click on the Class Specifications below that you want to see! All PRP Rules and Specifications are Subject to Change during the Season. Exceptions: PRP Late Model Tire Rule is as follows: Left Rear/Fronts - Hoosier (90) NLMT2, (90) NLMT3
Right Rear - Hoosier (92) NLMT2, (92) NLMT3, (92) NLMT4
**Must use the same set of 4 tires for Time Trials and Heat Races.
PRP has open tire rule for UMP Modifieds - No Aluminum Motors.