A PAIR OF PNEUMATIC BELTED TYRES FOR MOTORCYCLE

摘要

A pair of pneumatic belted tires for use in motorcycle are disclosed, each of which comprises a tread extending over a width corresponding to the maximum width of the tire, a pair of sidewalls, a pair of bead portions each containing a bead core therein, a carcass composed of at least one rubberized ply containing organic fiber cords inclined at an angle of 50 DEG -90 DEG with respect to the equatorial plane of the tire, and a belt composed of at least two rubberized plies each containing cords arranged at a certain inclination angle with respect to the equatorial plane. In such a tire pair, an inclination angle alpha of cord in the belt for rear wheel tire and an inclination angle beta of cord in the belt for front wheel tire satisfy the following relationship: ( alpha - beta )>/=4 DEG when 15 DEG /=-0.3 alpha +11.8 DEG when 26 DEG