A pneumatic radial tire having an aspect ratio of not more than 60% comprises at least one carcass ply (5) composed of a main body portion (5a) and a turn-up portion (5b), a stiffener (7) made of a soft rubber stock (7b) and a hard rubber stock (7a), and a...

A pneumatic tire comprises at least one carcass ply (2) of steel cords, in which a wrap part (6) wound on a bead core (4) along its outer peripheral face is disposed in a turnup portion (2b) of the carcass ply (2) and at least one wire chafer (5) wound aro...