PNEUMATIC RADIAL TIRE AND MOLD THEREFOR

摘要

PROBLEM TO BE SOLVED: To provide a pneumatic radial tire and a mold therefor, capable of improving uneven-wear resistance and on-ice performance, and reducing a mold manufacturing cost and a manufacturing period. SOLUTION: In this pneumatic radial tire and mold therefor, the crown shape of a tread forming the external profile of a tire tread section on the cross section in the tire radial direction including a tire rotating axis is structured so that 80% or more of the ground width of the tread may be occupied by two or more straight jointed sections. Straight grooves are disposed in the peripheral direction of the tire on the straight jointed sections in the radial direction of the tire.