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NHRA Expertise: Funny Car vs. Top Fuel front tires

30 Jul 2020
Posted by NHRA.com staff
News

Per the 2020 NHRA Rulebook

Funny Car Tires: Vehicle must be equipped with all four tires bearing the same tire manufacturer’s brand name. Restricted to Goodyear-only tires as specified by NHRA. Manufacturer name, logo, and tire identification markings must be unaltered and as provided by tire manufacturer, and visible on all four tires at all times. Tires are to meet size requirements when installed and ready to run at manufacturer’s recommended operating pressures. All drive tires must either be, or have been, generally available to all competitors. Tires that are currently being provided by the manufacturer, the manufacturer’s representative, or other commercial entity must be available to all competitors within that category. Minimum tire pressure at start of run 6psi. See General Regulations 5:1.

Funny Car Wheels: Front wheels meeting SFI Spec 15.2 mandatory. Beadlock 16-inch rear wheels meeting SFI Spec 15.4 mandatory; inner bead minimum 14 3/4 inches (+/- 1/8-inch). All wheels must be drive hub type and must mate with required drive type hub. Any modifications and/or lightening, unless performed by the manufacturer, prohibited. Must be completely isolated from driver compartment. Wire wheels prohibited. Rear-wheel discs or covers prohibited. Wheels must conform to applicable tire- manufacturer requirements. Any modifications and/or lightening prohibited. Titanium wheel studs prohibited.

Top Fuel Tires: Vehicle must be equipped with all four tires bearing the same tire manufacturer’s brand name. Restricted to Goodyear-only tires as specified by NHRA. Manufacturer name, logo, and tire identification markings must be unaltered and as provided by tire manufacturer, and visible on all four tires at all times. Tires are to meet size requirements when installed and ready to run at manufacturer’s recommended operating pressures. All drive tires must either be, or have been, generally available to all competitors. Tires that are currently being provided by the manufacturer, the manufacturer’s representative, or other commercial entity must be available to all competitors within that category. Minimum tire pressure at start of run 6 1/2psi. See General Regulations 5:1.

Top Fuel Wheels: Front wheels meeting SFI Spec 15.2 mandatory. Beadlock 16-inch rear wheels meeting SFI Spec 15.4 mandatory; inner bead minimum 14 3/4 inches (+/- 1/8-inch). All wheels must be drive hub type and must mate with required drive type hub. Any modifications and/or lightening, unless performed by the manufacturer, prohibited. Wire wheels prohibited. Rear-wheel discs or covers prohibited. Wheels must conform to applicable tire-manufacturer requirements. Minimum diameter on front wheels 17 inches. Any modifications and/or lightening prohibited. Titanium wheel studs prohibited.