| 摘要 |
<p>A side-reinforced run-flat tire having increased run-flat durability and riding comfort is easily press-molded by a normal bladder. The side-reinforced run-flat tire has a tread part (2), shoulder parts (3), side wall parts (4), and bead parts (5). A bead core (6) and a bead filler (7) are installed in the bead parts (5). A carcass ply (8) is constructed from a body part (8a) and a folded part (8b), and its each lateral end is extended from a crown part (9) to the bead parts (5) through the inner sides of the shoulder part (3) and the side wall part (4), folded back around the outer surfaces of the bead cores (6) from the lateral inner side to the outer side in the lateral direction of the tire, and turned up to the radial outer side of the tire. Reinforcement rubber layers (11) are formed on the inner sides, in the lateral direction of the tire, of the side wall parts (4). A bead reinforcement layer (12) is formed on that side (on the left side in the figure) of the tire where stress is increased during run-flat traveling. Because those portions of the tire that are constructed from a rubber layer are left-right symmetric with respect to the equator, the side-reinforced run-flat tire can be easily press-molded by the normal bladder.</p> |
