摘要 |
PURPOSE:To improve the durability of a tire at a high speed by applying substantially identical widthwise density to the organic fabric cord of a reinforcement layer covering the external edge of a belt layer over the entire width of the tire. CONSTITUTION:A tire has a plurality of main treads 3 and 3' along the peripheral direction of a tread face T. Also, a single reinforcement layer 2 is laid on the external side of two belt layers 4 and 4', and each of the belt layers 4 and 4' is used to cover the entire width of the tire including an external edge part 4E. In addition, the reinforcement layer 2 is formed with a rubber shielded organic fabric cord 1 spirally wound in a circumferential direction. In this case, the widthwise density of the organic fabric cord 1 is so set as to be substantially identical over the entire width of the tire. According to the aforesaid construction, the disorder of the reinforcement layer in a widthwise direction is eliminated and the durability of the tire at a high speed is enhanced. |