| 摘要 |
<p>At least a greater part of reinforcing steel elements (3) included in a belt (2) or a bead portion reinforcing layer (13) of a pneumatic radial tire (1) are divided into a plurality of groups (4,4 min ) each comprised of a plurality of reinforcing steel elements, and a distance ( delta , delta min ) between the group and the reinforcing steel element adjacent to this group is widened. In this tire, the growth and progress of cracking in the belt or the bead portion reinforcing layer can effectively be controlled. <IMAGE></p> |
