| 摘要 |
<p>In a heavy duty radial tire, a reinforcement belt 8 outward in a radial direction of the tire and a high-strength belt 13 inward in the radial direction are arranged between a radial carcass 2 and a tread rubber 4, and an intersect angle between cord 6a of an innermost wide-width slant cord layer 6 in the reinforcement belt 8 and cord 12a of an outermost narrow-width slant cord layer 12 in the high-strength belt 13 is not less than 10 DEG at an acute angle side, and narrow-width slant cord layers 11, 12 of the high-strength belt 13 in the tire mounted onto a rim and inflated under a maximum air pressure have a width corresponding to 20 SIMILAR 60% of a ground contact width of the tread rubber 4, and inclination angles of cords 11a, 12a with respect to an equatorial plane 5 of the tire are not more than 15 DEG , and a rubber gauge t1 of a first rubber layer 14 between cord 6a of an innermost wide-width slant cord layer 6 and cord 12a of an outermost narrow-width slant cord layer 12 is 0.9 SIMILAR 3.0 times a cord diameter D of the slant cord layer 11, 12. <IMAGE></p> |
