RULES & REGULATIONS
All race cars are subject to noise testing and must comply with Nashville Fairgrounds Speedway maximum noise requirements.
A muffler must be used and installed in a configuration that will suppress exhaust noise to a maximum of 99db’s at 100 feet.
All Divisions – 2021 NFS General Rules
▫ 2021 Rule Book
Tech Bulletin – February 24, 2020, Engine & Tires
– The Super Truck tire compounds will match that of the Pro Late Model division. There will not be a minimum tire purchase per event. Tires may be purchased at anytime. Use of tire softening or altering agents are not permitted. Tire inspection and the use of standard lab testing procedures will be performed.