| 摘要 |
PROBLEM TO BE SOLVED: To provide a pneumatic tire using a rubber composition for a tire tread preventing peeling off of a tread part from a tire body and excellent in gripping property and wearing resistance. SOLUTION: The pneumatic tire has a tread part constituted by two layers of a cap rubber on a ground-contact surface side and a base rubber on an inner side. The cap rubber has JIS (K6253) type A hardness of 27-43 at 100°C and thickness (TB) of the base rubber is 0.4 mm or more. A value of loss tangent (tanδ) is 0.2 or more and a ratio (TC/TB) of the thickness (TC) of the cap rubber and the thickness (TB) of the base rubber is 0.45 or more. COPYRIGHT: (C)2006,JPO&NCIPI |
