<p>A pneumatic radial tire characterized in that: an inner carcass layer is turned up around each bead core from inside to outside in such a manner as to wrap a bead filler therein; a steel cord reinforcing layer is disposed outside the inner carcass layer; an outer carcass layer is disposed in such a manner that it covers the outside of the steel cord reinforcing layer and its end portion extends to at least near the bead core; a second filler is disposed outside the outer carcass layer; the second filler has a hardness below that of the bead filler and within the range of 70 to 93 in terms of JIS hardness; the cord angle of the steel cord reinforcing layer is from 15 DEG to 30 DEG to a tire circumferential direction; and the height B of the steel cord reinforcing layer from a bead base to its upper end is specified by the following formula, where; the height of the bead filler from the bead base to its upper end is A the height of the second filler from the bead base to its upper end C and a tire sectional height D: 0.2 D < B < 0.5 D (1) C > B > A (2) u</p>
