| 摘要 |
PURPOSE:To make improvements in durability and steering stability, by setting up a belt cover layer using an organic fiber cord at the side of a tread part of a belt layer using a carbon fiber cord in layer, while constituting each angle of both these layers to be set to the specified value. CONSTITUTION:A carbon fiber cord C is used for a reinforced cord, and it is set up so as to cause each cord angle to be crossed at 15 deg.-35 deg. with each other to a tire circumferential direction whereby a belt layer 5 is constituted. At the side of its tread part 3, there is provided with a belt cover layer 6 which uses an organic fiber cord N, for example, a 6-nylon cord or the like for its reinforced cord and is formed so as to cause a cord angle to become zero to the tire circumferential direction. With this constitution, durability and steering stability both are improvable. |
