| 摘要 |
<p>A pneumatic tire having a tread pattern formed by arranging lateral grooves (23a, 23b, 23c) having a widthwise extending component in a ground contact portion of a tread and combining at least two kinds of pitch segments having different pitch lengths (P₁, P₂, P₃) in the circumferential direction of the tread, in which a negative ratio in each pitch segment is 25-55%, characterized in that the negative ratio in each pitch segment is constant, and in that the depth of the lateral groove included in each pitch segment is constant and the angle (β) of each groove wall with respect to the land surface is made larger in the pitch segment having a longer pitch length.</p> |
