Patent ID: 6977020

Claim:
A method of mounting first and second pneumatic radial motorcycle tires each comprising a spiral belt formed by spirally winding a cord along a circumferential direction of a crown portion of the tire, and a pair of cross belt members arranged on an outer circumferential side of the spiral belt and in parallel to each other in a common curved plane in a circumferential direction of the tire so as to be disposed on opposites sides of an equatorial plane of the tire and separated by an opening space, wherein cords of one of the cross belt members extend in a direction opposite to cords of the other one of the cross belt members with respect to the equatorial plane, the method comprising mounting the first tire onto a front wheel of a vehicle such that the cords of the pair of cross belt members have an acute angle of inclination with respect to the equatorial plane in a forward rotating direction of the first tire, and mounting the second tire onto a rear wheel of the vehicle such that the cords of the pair of cross belt members have an obtuse angle of inclination with respect to the equatorial plane in the forward rotating direction of the second tire.