| 摘要 |
PROBLEM TO BE SOLVED: To provide a tire for heavy loads capable of reducing the weight and enhancing the durability of a bead part. SOLUTION: A return part 6b of a carcass ply 6A comprises a return main part 10 to be folded along an inner surface in the tire axial direction of a bead core 5, an inner surface SL in the tire radial direction, and an outer surface So in the tire axial direction, and a return sub part 11 which is continuous to the return main part 10 and extends separate from the bead core 5. The return sub part 11 extends in an inclined manner toward a body part 6a at the angleθbelow 90°with respect to an outer surface SU in the tire radial direction of the bead core 5. The minimum distance La from an outer end E1 of the return sub part 11 to the outer surface of the bead core 5 is 5-12 mm. A bead reinforcing layer 8 includes an inner piece part 8a, a middle piece part 8b continuous to the inner piece part 8a and extending along the return main part 10, and an outer piece part 8c continuous to the middle piece part 8b and extending along the return sub part 11. COPYRIGHT: (C)2005,JPO&NCIPI
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