| 摘要 |
<p>In a pneumatic radial tire for trucks and buses mounted on a 15 DEG center drop rim, an outer surface portion (13) of a composite side-rubber (5) and/or an envelope surface (4-13) of the bead core (4) among members constituting the bead portion (1) of the tire has a curved shape concavedly directing toward the outside of the tire at a region opposite to an inner curved surface (21S) of a slantly rising portion in a flange (21F) of an approved rim (21), whereby the durability of the bead portion and the steering stability of the tire may be considerably improved. <IMAGE></p> |
