Abstract: Provided is a pneumatic tire for a motorcycle which does not produce a failure such as early wear or uneven wear and which has improved grip while turning. The pneumatic tire for a motorcycle is a pneumatic tire for a motorcycle including a ring-shaped tread portion. The tire has, inside in the tire radial direction of the crown portion, at least one spiral belt layer having a width narrower than the width of the tread portion; at the shoulder portion of the tread portion, an inner layer rubber having a smaller modulus at 300% elongation at room temperature than that of a surface layer rubber is arranged; the inner layer rubber extends to a buttress portion; and the range of the ratio of the moduli between the inner layer rubber and the surface layer rubber is from 0.3 to 0.9.

Abstract: Provided is a pneumatic tire for a motorcycle which does not produce a failure such as early wear or uneven wear and which has improved grip while turning. The pneumatic tire for a motorcycle is a pneumatic tire for a motorcycle including a ring-shaped tread portion. The tire has, inside in the tire radial direction of the crown portion, at least one spiral belt layer having a width narrower than the width of the tread portion; at the shoulder portion of the tread portion, an inner layer rubber having a smaller modulus at 300% elongation at room temperature than that of a surface layer rubber is arranged; the inner layer rubber extends to a buttress portion; and the range of the ratio of the moduli between the inner layer rubber and the surface layer rubber is from 0.3 to 0.9.