Abstract: A tire-bead manufacturing method, comprising preparatively providing a bead filler as a member comprising a filler body part and a projection part connected to each other through a portion of connection and having taper surfaces facing each other, and after the projection part of the bead filler is attached onto an outer peripheral surface of a bead core, turning the filler body part to stand up with the portion of connection together of the filler body part and the projection part as the point of turning.

Abstract: A pneumatic radial tire including a belt reinforcing layer or layers formed by spirally continuously winding a single organic fiber cord in a manner such that before the molding of an unvulcanized tire, the belt reinforcing layer or an outer or outermost belt reinforcing layer has a greater density of winding of the organic fiber cord in its regions located beneath or inner to a main groove-forming rib of a mold than in its remaining region, whereby after the molding of the unvulcanized tire, the cord density in the regions of the belt reinforcing layer or the outer or outermost belt reinforcing layer beneath or inner to the main groove-forming rib is set to be substantially identical with the cord density in its remaining region; and a process for the production of such tire.