| 摘要 |
PROBLEM TO BE SOLVED: To provide a run-flat tire that is improved in a run-flat durability performance.SOLUTION: A run-flat tire has: a pair of right and left beads 1; a pair of sidewalls 2 connecting outside the tire radial direction from the bead; and a tread 3 that extends and steps over between a pair of sidewalls and forms a grounded part, and includes: a carcass 4 comprising one or more sheets of carcass plies extending between a pair of beads in a toroidal shape and reinforcing each part; and side rubber layer 5 of cross sectional crescentic shape disposed in inside of carcass in a sidewall. The carcass ply comprises a rubberized layer of a hybrid cord that is made by twisting the filament comprising polyester fibers and the filament comprising the nylon fiber or the cellulose fiber, and the textile surface of the polyester fiber is adhered with the surface treatment agent that has the epoxy radical group. |
