摘要 |
PURPOSE:To achieve the improvement in operability, stability or the like of a tire, in a plurality of belt layers consisting of metallic cords having been arranged between the carcass layer and the tread, by specifying respective chord angles or the like in the circumferential direction of the tire, and by providing additional new cord layers. CONSTITUTION:The first belt layers 4a are arranged in both shoulder parts S so as to be apart each other from the central region T of a crown, and further the chord angle in the circumferential direction of the tire is set to be 40 deg. to 75 deg.. And in the void between a carcass layer 3 and the second belt layer 4b in the central region T of the crown, one layer of organic fiber cord layer 5 having a chord angle of 0 deg. to 10 deg. in the circumferential direction of tire is arranged, and further the total strength of the cords is set to be 240 kg/cm for unit breadth or more. In addition, respective cords of the second and the third belt layers 4b, 4c are alternately intersected, and further their respective chord angles in the circumferential direction of the tire are set to be 24 deg. to 30 deg., and 16 deg. to 10 deg..
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