TM/FC Rules - Tires & Wheels
TIRES & WHEELS: 5
5.1 TIRES Tires to be automotive type represented by manufacturer for Methanol
Funny Car. Maximum rear tire: 18-inches (45.8 cm) wide x 118-inches (2.997 m)
circumference, minimum circumference 108-inches (2.743 m). Tires are to meet
size requirements when installed and ready to run at manufacturer's recommended
operating pressures.
5.2 WHEELS Rear wheels meeting SFI Spec 15.1 mandatory; maximum width:
16-inches. Must be completely isolated from driver compartment. Wire wheels
prohibited. Rear-wheel discs or covers prohibited.