Pneumatic radial tire with 1x2 steel belt cord structure

摘要

A pneumatic radial tire having at least one steel belt layer disposed at a tread portion, wherein each steel belt layer is constituted by mixing and arranging at random a plurality of steel cords having a 1x2 twist structure of an S twist and a plurality of steel cords having a 1x2 twist structure of a Z twist, and has a mixing ratio of the steel cords having the 1x2 twist structure of the S twist to the steel cords having the 1x2 twist structure of the Z twist within a range of 4:6 to 6:4 and a difference in the twist pitch of at least 1.5 mm.