| 摘要 |
PURPOSE:To improve durability at high speed, by constituting a belt part with a main belt layer to be made up of two metallic cord layers in cross orientation and an auxiliary belt layer constituted of an organic fiber cord paralleled in a tire circumferential direction and strengthening the central zone, in case of a super-flat tire, bearing the above caption, for a passenger car. CONSTITUTION:A belt par 6 is constituted of both main and auxiliary belt layers 10 and 11, and the main belt layer 10, being the same width as tread width W, is crossed at an angle of about 22 deg. with a tire circumferential direction, and constituted of a rubber covering metallic cord layer layer of minimum two layers crossed with each other. And, the auxiliary belt layer 11, being the same width as the main belt layer 10, is constituted of a minimum one layer of the organic fiber cord 12 set up in the tire circumferential direction, and strength of the central zone 11a is set to be larger than that of an outer zone 11b. With this constitution, high-speed durable performance is improved. |
