| 摘要 |
PROBLEM TO BE SOLVED: To improve grip performance as well as rigidity of tread in a tire for a motorcycle. SOLUTION: This tire is constituted such that a tread rubber 8 comprises a cap rubber 9 which forms a surface of a tread part and a base rubber 10 arranged inside of tire radial direction of this cap rubber 9. In this case, rubber thickness ratio (Rh) which is ratio (h1/h2) of thickness h2 of the cap rubber 9 and thickness h1 of the base rubber 10 is 0.5-2 and complex modulus of elasticity E2* of the cap rubber 9 is 2.0-2.9MPa and also the complex modulus of elasticity C2* of this cap rubber 9 and the rubber thickness ratio (Rh) and complex modulus of elasticity ratio (RE) which is ratio with the complex modulus of elasticity E2* of the cap rubber 9 and complex modulus of elasticity E1* of the base rubber 10 (E1*/E2*) satisfy relationship E2*.((Rh+1)/(Rh/ RE)+1)>=3.5(MPa). |
