PNEUMATIC TIRE FOR TWO-WHEELED VEHICLE

摘要

This invention provides a pneumatic tire for a two-wheeled vehicle, which can ensure an improvement in a lateral grip upon the revolution of the pneumatic tire, the suppression of tread abrasion in a shoulder part, uniformizing of the abrasion of left and right wheels, and heat generation of the tread in an actual vehicle. In the pneumatic tire, left and right dissimilar rubber layers (15b, 15c) are disposed in the inner layer of the tread in left and right shoulder parts (16). The left and right dissimilar rubber layers (15b, 15c) are formed of a dissimilar rubber, of which the tan s is smaller than the tan s of a rubber constituting a tread surface layer (15a) and have a width in the range of 5% to 25% of the tread developed width. Further, in the left and right dissimilar rubber layers (15b, 15c), the position of the end on the side of a tread end (15z) is in the range of 5% to 14% of the tread developed width as measured from the tread end (15z), the position of the end on the side of a center part (17) is in the range of 15% to 30% of the tread developed width as measured from the tread end (15z), and the thickness is 20% to 70% of the whole thickness of the tread. Further, the tan s of the rubber constituting the left dissimilar rubber layer (15b) disposed on the left side of which the frequency of use is high is smaller than the tan s of the rubber constituting the right dissimilar rubber layer (15c) disposed on the right side of which the frequency of use is low.