| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a pneumatic tire having a flat belt structure which exhibits excellent rolling resistance.SOLUTION: A pneumatic tire includes a carcass toroidally straddling between a pair of bead parts, and a belt comprising at least one inclined belt layer located radially outside a crown part of the carcass and covering with rubber many cords extending in a direction inclined to an equatorial plane of the tire. A tread is arranged radially outside the belt. In a cross section in the width direction of the tire in a state mounted on an application rim, a ratio BD/BW of a radius difference BD between a radius at a center and a radius at an end in the width direction of the widest layer in the inclined belt layers to the width BW of the widest layer in the inclined belt layers is 0.01 or more and 0.04 or less. An auxiliary rubber layer comprising a low Poisson's ratio material having a Poisson's ratio of 0.250 or more and 0.490 or less is provided only in a buttress part in a tire side part of the tire.</p> |
