Patent ID: 8863801

Claim:
A pneumatic radial tire framed by a carcass toroidally extending between a pair of bead portions and having at least two layers of crossing belt layers formed by rubberizing steel cords and disposed around an outside of a crown portion thereof in a radial direction, wherein the steel cord is composed of eight to nine steel wires of 0.10 to 0.20 mm in diameter, a number of driven steel cords is 52 to 60 cords/50 mm and a distance between the adjacent steel cords within the belt layer is 0.3 mm or more, and wherein the steel cord has a core-single layer sheath structure in which two of the steel wires are disposed in parallel without being stranded from each other as a core and the remaining six to seven steel wires are stranded around the core so as to have gaps into which rubber can infiltrate between at least one set of adjacent steel wires.