| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a pneumatic tire can improve braking performance while maintaining satisfactory resistance to rolling. Ž<P>SOLUTION: This pneumatic tire has a belt constituted by arranging inclined belt layers composed of at least two layers each and covering many cords extended in the direction of inclination for an equatorial plane of the tire with rubber on an outer side in the radial direction of a crown part of a carcass extending over a pair of bead parts in a troidal shape by using the carcass as a skeleton in order and arranging a tread on an outer side in the radial direction of the belt. A ratio of difference BD between diameters of a central part in the width directio of the outermost side layer and an end part in the width direction to half width HBW of the outermost side layer of the inclined belt layer, namely, BD/HBW, in cross section in the width direction of the tire mounted on an application rim is 0.10 or more and 0.13 or less. The tread has higher modulus of elasticity of rubber in a central zone in the width direction than modulus of elasticity of rubber in both of side zones of the central zone in the width direction. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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