| 摘要 |
<p>A pneumatic tire comprises a bead core formed by helically winding and spirally laminating an organic or inorganic fiber cord obtained by twisting an organic or inorganic fiber reinforcing element in one direction and then twisting at least two twisted fiber reinforcing elements in a direction opposite to the twisting direction of the fiber reinforcing element, in which the cord is formed by successively twisting so that the twisting number in the last twisting is made larger than the twisting number in the initial twisting and the twisting directions from the initial twisting to the last twisting are made different to each other. <IMAGE></p> |
