New Jersey Administrative Code
Title 13 - LAW AND PUBLIC SAFETY
Chapter 62 - MOTOR VEHICLE RACE TRACK RULES
Subchapter 4 - SAFETY REQUIREMENTS FOR VEHICLES AND PERSONNEL: OVAL RACING
Section 13:62-4.22 - Tires and wheel covers

(a) No vehicle shall be permitted to participate in any race if the tires are equipped or fitted with any studs, hobs, or other projections.

(b) This section is not intended to prohibit the use of rubber knobbed tires normally used on dirt race tracks.

(c) No vehicle shall be permitted to participate in any race if the tires are in an unsafe condition.

(d) Wheel covers fastened only by way of Dzus buttons and similar twist/lock fasteners are prohibited. Foam inserts and wheel covers that are bolted to the beadlock, or are part of the beadlock are permitted.

(e) Carbon fiber wheels are prohibited.