PNEUMATIC TIRE FOR HEAVY LOAD

摘要

A heavy-duty pneumatic tire (1) comprises a carcass (6) comprising a carcass ply (6A) extending from a tread portion (2) through a sidewall portion (3) and turned up around a bead core (5) of a bead portion (4). The bead core (5) comprises a radially inner surface (5a) extending along a bottom surface (4a) of the bead portion (4) in the radial direction of the tire. Under both conditions that include an unloaded standard condition where the tire is mounted on a standard rim (R) and inflated to regular internal pressure and a loaded standard condition where the tire in the unloaded standard condition above is loaded with a regular load and grounded at a camber angle of 0 degrees, the tire has an angle (¸1) between the radially inner surface (5a) of the bead core (5) and a rimsheet surface (13) of the standard rim (R) being in a range of 0 plus/minus 3 degrees.