PNEUMATIC RADIAL TIRE

A pneumatic radial tire having tire components consisting of steel cords. These steel cords have the following features: (a) The cords have a (1 + N)-filament structure fabricated by twisting together N sheath filaments around a core filament that has been spirally curled longitudinally of the cords; (b) The horizontal cross section of each cord has a low profile; (c) In the horizontal cross section of the cord, gaps are left between the adjacent sheath filaments, thus forming an open structure; (d) The core filament is wedged in between the sheath filaments; and (e) The direction in which the sheath filaments are twisted together is identical with the direction in which the core filament has been spirally curled.