| 摘要 |
PROBLEM TO BE SOLVED: To prevent the shimmy in high frequency area and stabilize the steering in high-speed traveling by arranging an organic fiber cord in a specified range to the equatorial surface of a tire, and providing a reinforcing layer having a specified setting width corresponding to the width of a spiral belt on the inside of a carcass layer. SOLUTION: A carcass layer 4 consists of a ply of organic fiber cords arranged in one direction within the range of 60-90 deg. to the equatorial surface of a tire. A spiral belt layer 5 consists of a cord ply of one rubber coating cord or a plurality of ribbon-like rubber coating cords spirally wound and extended in the lateral direction of the tire. Further, a reinforcing layer 6 is arranged on the inside of the carcass layer 4, and the width is set to a setting width of 20-120% of the width of the spiral belt layer 5. According to this, each performance of shimmy, stability, lightness, and clipping during cornering can be well balanced. |
