| 摘要 |
In a belt layer structured by a plurality of zigzag endless belts which are layered in a tire radial direction and are folded-over at both ends in a tire widthwise direction and are disposed uniformly over an entire region, an angle theta1 of an inner side cord portion and a tire equatorial plane, an angle theta2 of an outer side cord portion and the tire equatorial plane, and an angle thetaM of an intermediate cord portion and the tire equatorial plane, are theta1>thetaM>theta2.
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