Patent ID: 7942178
Filing Date: 2011-05-17
Classification: B60C

Abstract:
1. A pneumatic tire for a motorcycle comprising a tread portion comprising tread rubber having a layered structure of one or more layers, a pair of side wall portions continuously extending from each side of this tread portion inward in a radial direction of the tire and bead portions each continuing into a radially inner side of each of these side wall portions, wherein a ground contact region of the tread portion comprises five regions of: 100% modulus of at least a portion forming a ground contact surface of intermediate tread rubber disposed over an entire region of the intermediate regions is larger than both of 100% modulus of at least a portion forming a ground contact surface of central tread rubber disposed over an entire region of the central region and 100% modulus of at least a portion forming a ground contact surface of shoulder tread rubber disposed over an entire region of the shoulder regions; 100% modulus of the intermediate tread rubber is within a range between 1.3 MPa and 2.1 MPa; and in a half of a cross-sectional view taken along a tire meridian, a periphery length of an outer surface of the intermediate tread rubber is within a range between 10% and 40% of a periphery length of an entire of the ground contact region; wherein 100% modulus of the central tread rubber is larger than 100% modulus of the shoulder tread rubber.