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. <EOS>