| 摘要 |
PROBLEM TO BE SOLVED: To provide a tire excellent in durability of a bead section for preventing separation of a carcass end and fretting wear of a carcass ply cord by improving a bead core structure. SOLUTION: In the tire, a carcass by at least one ply straddled over one pair of bead cores in a toroidal shape is arranged, and a belt and a tread are arranged in this order outside of this carcass in the radial direction. The bead core has a structure where layers having parallel steel wires along the periphery of the core by hard rubber are stacked outward in the radial direction. COPYRIGHT: (C)2005,JPO&NCIPI
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