| 摘要 |
PROBLEM TO BE SOLVED: To effectively restrain separation at a ply end of a narrow belt ply. SOLUTION: An auxiliary layer 35 with cords 36 embedded inclining reversely to cords 28 in a maximum width belt ply 25 is arranged to overlap a width direction outer end 25a. A rhomb formed of a cords 36 and cords 28 is deformed in a crushed state every time reaching a ground area. As a result, rubber positioned outward in the cross direction from a cross direction outer end 26a of a narrow belt ply 26 is displaced inward in the cross direction so as to reduce tensile strain in the cross direction generated to the cross direction outer end 26a. |
