A pneumatic tire, comprising: a tread portion extending in a tire circumferential direction and having an annular shape; a pair of sidewall portions respectively disposed on both sides of the tread portion; a pair of bead portions each disposed on an inner side of the pair of sidewall portions in a tire radial direction; a carcass layer mounted between the pair of bead portions; a plurality of belt layers disposed on an outer circumferential side of the carcass layer in the tread portion; and a belt cover layer disposed on an outer circumferential side of the belt layers; a side reinforcing layer formed by arranging a plurality of reinforcing cords and covering the plurality of reinforcing cords with rubber being disposed in regions from the bead portions to the sidewall portions, the belt cover layer being formed by spirally winding a cover cord covered with a coating rubber along the tire circumferential direction, and the cover cord being a polyethylene terephthalate fiber cord having an elongation under a load of 2.0 cN/dtex at 100°C of from 2.5% to 3.5%; wherein a reinforcing cord constituting the side reinforcing layer is a steel cord, and the side reinforcing layer is disposed on an outer side of a body portion of the carcass layer in the sidewall portions; wherein the steel cord has an N+M structure in which the number of wires N of an inner layer ranges from two to four, and the number of wires M of an outer layer ranges from two to seven, and the twist directions of the inner layer and the outer layer are different; wherein a length L1 of the side reinforcing layer along the tire radial direction is larger than a length L2 of the bead filler along the tire radial direction, and a difference between the lengths L1 and L2 ranges from 5 mm to 10 mm. a tread portion extending in a tire circumferential direction and having an annular shape; a pair of sidewall portions respectively disposed on both sides of the tread portion; a pair of bead portions each disposed on an inner side of the pair of sidewall portions in a tire radial direction; a carcass layer mounted between the pair of bead portions; a plurality of belt layers disposed on an outer circumferential side of the carcass layer in the tread portion; and a belt cover layer disposed on an outer circumferential side of the belt layers; a side reinforcing layer formed by arranging a plurality of reinforcing cords and covering the plurality of reinforcing cords with rubber being disposed in regions from the bead portions to the sidewall portions, the belt cover layer being formed by spirally winding a cover cord covered with a coating rubber along the tire circumferential direction, and the cover cord being a polyethylene terephthalate fiber cord having an elongation under a load of 2.0 cN/dtex at 100°C of from 2.5% to 3.5%; wherein a reinforcing cord constituting the side reinforcing layer is a steel cord, and the side reinforcing layer is disposed on an outer side of a body portion of the carcass layer in the sidewall portions; wherein the steel cord has an N+M structure in which the number of wires N of an inner layer ranges from two to four, and the number of wires M of an outer layer ranges from two to seven, and the twist directions of the inner layer and the outer layer are different; wherein a length L1 of the side reinforcing layer along the tire radial direction is larger than a length L2 of the bead filler along the tire radial direction, and a difference between the lengths L1 and L2 ranges from 5 mm to 10 mm.