| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a pneumatic radial tire which improves steering stability while preventing degradation of road noise in the pneumatic tire for which a mounting direction to a vehicle is specified. <P>SOLUTION: In the pneumatic tire for which the mounting direction to the vehicle is specified, a vehicle inside side wall section 2i is divided into at least two regions arranged in a tire radial direction, a vehicle outside side wall section 2o is divided into at least two regions arranged in a tire radial direction, and hardness of a rubber composition for composing these at least four regions is made different from one another, and also, the hardness of the rubber composition in the vehicle outside side wall section 2o is relatively higher than that in the vehicle inside side wall section 2i and in each of the side wall sections 2i and 2o, the hardness on the tread section 1 side is relatively lower than that on the bead section 3 side. <P>COPYRIGHT: (C)2013,JPO&INPIT |
