| 摘要 |
<p>A pneumatic radial tire comprises a pair of bead portions each containing a bead core (1), a radial carcass, a belt comprised of at least one belt layer, and a tread, in which (I) a tapering angle &thetas;C of an inner side of the bead core (1) in the radial direction is within +/- 2 DEG of a tapering angle &thetas;R of a bead seat part in an approved rim, and (II) a compression ratio Ca at a widthwise inner end (a) of the inner side of the bead core is within a range of 102-115% of a compression ratio Cb at a widthwise outer end (b) thereof. <IMAGE></p> |
