摘要 |
<p><P>PROBLEM TO BE SOLVED: To improve riding comfort while securing run-flat durability. <P>SOLUTION: The run-flat tire (1) comprises a carcass (6), a belt layer (7) having two belt plies (7A and 7B) inside and outside of a tire radius, and a side-reinforcing rubber layer (11) having a substantially crescent section. The carcass (6) includes a carcass ply (6A) having carcass cords arrayed at an angle of 70 to 90 degrees with respect to the tire circumference direction and coated with topping rubber, and the carcass cords are made of aramid fiber cords having a twisting coefficient (T) of 0.50 to 0.70. The run-flat tire (1) further comprises a cushion rubber layer (9) provided between the inside and outside belt plies (7A and 7B). <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |