Pneumatic radial tire with specified bead reinforcing layer

A radial tire comprising:

• a pair of bead cores, one of the bead cores being provided at a left bead portion and the other of the bead cores being provided at a right bead portion;
• a carcass ply extending in a toroidal shape between the bead portions, and being formed from one radial cord layer which is wound about the pair of bead cores and anchored to the bead portions;
• a belt and a tread disposed at a crown portion radial direction outer side of the carcass ply;
• and
• a bead filler and a bead reinforcing layer disposed at each of the bead portions,
• wherein the carcass ply is formed from a carcass ply main body extending from one bead portion to the other bead portion, and carcass ply turn-over portions each of which is wound about a bead core and extends toward a radial direction outer side,
• the bead filler is interposed between the carcass ply main body and a carcass ply turn-over portion, and is tapered from directly above the bead core toward a radial direction outer side,
• the bead reinforcing layer is interposed between the carcass ply main body and a bead filler, and along the carcass main body, an upper end of the bead reinforcing layer extends to a position at 30 to 80% of a tire cross-sectional height, and the upper end of the bead reinforcing layer is disposed further toward a radial direction outer side than an upper end of the bead filler,
• the bead reinforcing layer is formed from a rubber covered cord layer in which organic fiber cords having a modulus of elasticity of 700 to 1500 kg/mm.sup.2 are embedded in parallel in rubber, and
• an upper end of the carcass ply turn-over portion is disposed further toward a radial direction outer side than an upper end of the bead reinforcing layer.