| 摘要 |
<p>A pneumatic radial tire especially for use on trucks and buses comprises a carcass (1) reinforcing a sidewall portion (4) and a tread (6), and a belt (5) comprised of at least two belt layers, wherein when the tire is mounted onto an approved rim (7) and inflated under an internal pressure of 0.5-1.0 kgf/cm<2>, a carcass line of the carcass at a radial section of the tire comprises a curve having a maximum radius of curvature (R) in a region (E) ranging over 10-50% of a tire sectional height (H) and centering around a position (S) of maximum carcass width, and the sidewall portion (4) has a maximum thickness in a zone correspcnding to the region (E). <IMAGE></p> |
