N.D. Cent. Code § 39-27-05: Tires, wheels, and rims

1.Motorcycle tires must be of pneumatic design with a minimum width of two and twenty-five hundredths inches [57.15 millimeters] designed for highway use.

2.Tires on two-wheel motorcycles and the single tire on the front or rear of a three-wheel motorcycle must have a load capacity rating at least equal to their respective gross axle weight ratings. Each tire on the front or rear axle of a three-wheel motorcycle must have a load capacity rating at least equal to one-half the front or rear axle gross axle weight rating.

3.Wheel rim diameters may not be less than ten inches [25.4 centimeters] or otherwise comply with title 49, Code of Federal Regulations, part 571, Federal Motor Vehicle Safety Standards, and must otherwise comply with applicable state standards, as promulgated by the director. Two-wheel motorcycles using low pressure tires are exempt from this subsection if the inflated height of the tire is twenty inches [508 millimeters] or greater.