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, and a pair of bead portions each disposed on an inner side of the sidewall portions in a tire radial direction, the pneumatic tire comprising: at least one 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 layer, the carcass layer being constituted by a carcass cord made of polyester fiber, characterised in that an elongation at break of the carcass cord is from 20% to 30%, and a product A = D × Ec of a fineness based on corrected mass D (unit: dtex/cord) per carcass cord and a count Ec (unit: cords/50 mm) of the carcass cord per 50 mm in a direction orthogonal to an extension direction of the carcass cord is from 1.8 × 10 5 dtex/50 mm to 3.0 × 10 5 dtex/50 mm, and the belt cover layer is constituted by a composite cord obtained by intertwining a yarn made of aramid fiber and a yarn made of an other organic fiber, a cord diameter per composite cord being 0.75 mm or less, tensile strength per width of 50 mm at break of the composite cord being 14 kN/50 mm or more, and an elastic modulus per width of 50 mm at 2 to 5% elongation of the composite cord being from 1.7 kN/(50 mm·%) to 2.3 kN/(50 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, and a pair of bead portions each disposed on an inner side of the sidewall portions in a tire radial direction, the pneumatic tire comprising: at least one 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 layer, the carcass layer being constituted by a carcass cord made of polyester fiber, characterised in that an elongation at break of the carcass cord is from 20% to 30%, and a product A = D × Ec of a fineness based on corrected mass D (unit: dtex/cord) per carcass cord and a count Ec (unit: cords/50 mm) of the carcass cord per 50 mm in a direction orthogonal to an extension direction of the carcass cord is from 1.8 × 10 5 dtex/50 mm to 3.0 × 10 5 dtex/50 mm, and the belt cover layer is constituted by a composite cord obtained by intertwining a yarn made of aramid fiber and a yarn made of an other organic fiber, a cord diameter per composite cord being 0.75 mm or less, tensile strength per width of 50 mm at break of the composite cord being 14 kN/50 mm or more, and an elastic modulus per width of 50 mm at 2 to 5% elongation of the composite cord being from 1.7 kN/(50 mm·%) to 2.3 kN/(50 mm·%). at least one 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 layer, the carcass layer being constituted by a carcass cord made of polyester fiber, characterised in that an elongation at break of the carcass cord is from 20% to 30%, and a product A = D × Ec of a fineness based on corrected mass D (unit: dtex/cord) per carcass cord and a count Ec (unit: cords/50 mm) of the carcass cord per 50 mm in a direction orthogonal to an extension direction of the carcass cord is from 1.8 × 10 5 dtex/50 mm to 3.0 × 10 5 dtex/50 mm, and the belt cover layer is constituted by a composite cord obtained by intertwining a yarn made of aramid fiber and a yarn made of an other organic fiber, a cord diameter per composite cord being 0.75 mm or less, tensile strength per width of 50 mm at break of the composite cord being 14 kN/50 mm or more, and an elastic modulus per width of 50 mm at 2 to 5% elongation of the composite cord being from 1.7 kN/(50 mm·%) to 2.3 kN/(50 mm·%).