Patent ID: 8365784

Claim:
A pneumatic tire for motorcycles comprising bead cores embedded in each of a left-and-right pair of bead portion; at least one ply of carcass extending toroidally between said pair of bead portions; at least one ply of belt layer installed outside of the carcass in the direction of the radius of the tire; and a tread portion placed outside of the belt layer in the direction of the radius of the tire, wherein when, in said tread portion, the 50% region of the developed width of the tread whose center is on the tire equatorial plane is defined as “tread center portion”, the 25% regions of the developed width of the tread region each of which is on the either side of the tread center portion are defined as “tread side portion”, and each of the tread side portions is divided into three equal parts which are defined from the tread end in order as region A, region B and region C, the average modulus of elasticity of the tread rubber in the region B at 100% elongation at a temperature of 40° C. is larger than the average modulus of elasticity of the tread rubber in the region A and in the region C at 100% elongation at 40° C. wherein the average moduli of elasticity of the tread rubber in the region A, region B and region C at 100% elongation at a temperature of 40° C. satisfy: region B>region C>region A.