| 摘要 |
<p>PURPOSE: To improve riding comfort without reducing the high-speed durability of tire. CONSTITUTION: A cap rubber 4-2 is made up of a foamless rubber layer. A base rubber 4-1 is divided across the width, and its part close to the side is made up of a foamless rubber layer 11. Then, a foam rubber layer 12 containing isolated air bubbles is arranged inside across the width of the foamless rubber layer. Further, the dynamic modulus of elasticity of the foamless rubber layer constituting the base rubber 4-1 is smaller than that of the foamless rubber layer of the cap rubber 4-2.</p> |
