| 摘要 |
PROBLEM TO BE SOLVED: To improve cut-penetration resistance and thus durability without deteriorating the enveloping performance of a shoulder part. SOLUTION: A pneumatic tire has a belt layer 2 of three or more layers comprising steel code on the outside periphery of a carcass layer 4 in a tread 5. Let the width of a first belt layer 21 abutting on the carcass layer 4 be W1 , a code angle of the first belt layer 21 toward the circumferential direction beα, the width of the belt layer other than the first belt layer 21 be Wn , a code angle of the belt layer other than the first belt layer 21 toward the circumferential direction beβ, and the maximum distance between the carcass layers of the side walls at the maximum width position be SW, the following relationships are satisfied. 0.7<W1 /SW<0.9, 0.4<Wn /SW<0.6, 32 deg.<α<40 deg.,β<α.
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