- Tire Type: Not limited
- Wheel and Tire Size: Wheels and tires of any diameter or width may be used.
- Ground Clearance: The vehicle must have sufficient ground clearance to roll over a 2 ร 2 inch piece of lumber milled to 1ยฝ ร 1ยฝ inches without the vehicle contacting the ground.
- Driver Clearance: With the driver in the normal driving position, no part of the driverโs body may come into contact with the tires, wheels, or spokes.