V.4.3 Tires

Vehicles may have two types of tires, Dry and Wet

a. The tires on the vehicle when it is presented for Technical Inspection.

b. May be any size or type, slicks or treaded.

Any size or type of treaded or grooved tire where:

 The tread pattern or grooves were molded in by the tire manufacturer, or were cut by the tire manufacturer or appointed agent.

Any grooves that have been cut must have documented proof that this rule was met

 There is a minimum tread depth of 2.4 mm

V.4.3.3 Tire Set

a. All four Dry Tires and Wheels or all four Wet Tires and Wheels do not have to be identical.

b. Once each tire set has been presented for Technical Inspection, any tire compound or size, or wheel type or size must not be changed.

a. Tire Pressure must be in the range allowed by the manufacturer at all times.

b. Tire Pressure may be inspected at any time

V.4.3.5 Requirements for All Tires

a. Teams must not perform any hand cutting, grooving or modification of the tires.

b. Tire warmers are not allowed.

c. No traction enhancers may be applied to the tires at any time onsite at the competition.