A pneumatic tire comprising: a pair of bead portions each containing a bead core, a pair of sidewall portions each connected to each of the pair of bead portions and extending outward in a radial direction, and a tread portion connecting the outer circumferential edges of the pair of sidewall portions; as well as a carcass arranged in such a manner that both ends thereof are each folded over the bead core in the pair of bead portions to form a toroidal shape from the sidewall portions to the tread portion; a belt provided on the outer circumferential side of a crown portion of the carcass; a bead filler provided between a main body portion and a folding-over portion of the carcass; and a cord provided in at least one part from the bead portion to the sidewall portions at an angle of 0 to 10° with respect to the circumferential direction, wherein, in a state of being mounted on a rim, defining the rim diameter as D, the length from the rim position representing the rim diameter D to the maximum tire radial height as SH, the rim flange height as G, the rim flange radius as R 2, and the bead filler height H bf as the tire radial height with respect to the rim position representing the rim diameter D, the bead filler height H bf is less than or equal to a value obtained by the following formula: SH − G − R 2 / 4 + G − R 2, and the cord has an inflection point in a stress-strain curve, with a low elastic modulus in a low-strain region at or below the inflection point, and a high elastic modulus in a high-strain region above the inflection point; characterised in that the cord is composed of two or more kinds of fibers of different materials wherein the material of the cord contains at least polyethylene terephthalate; wherein the material applied to the cord is different to a material applied to the carcass. a pair of bead portions each containing a bead core, a pair of sidewall portions each connected to each of the pair of bead portions and extending outward in a radial direction, and a tread portion connecting the outer circumferential edges of the pair of sidewall portions; as well as a carcass arranged in such a manner that both ends thereof are each folded over the bead core in the pair of bead portions to form a toroidal shape from the sidewall portions to the tread portion; a belt provided on the outer circumferential side of a crown portion of the carcass; a bead filler provided between a main body portion and a folding-over portion of the carcass; and a cord provided in at least one part from the bead portion to the sidewall portions at an angle of 0 to 10° with respect to the circumferential direction, wherein, in a state of being mounted on a rim, defining the rim diameter as D, the length from the rim position representing the rim diameter D to the maximum tire radial height as SH, the rim flange height as G, the rim flange radius as R 2, and the bead filler height H bf as the tire radial height with respect to the rim position representing the rim diameter D, the bead filler height H bf is less than or equal to a value obtained by the following formula: SH − G − R 2 / 4 + G − R 2, and the cord has an inflection point in a stress-strain curve, with a low elastic modulus in a low-strain region at or below the inflection point, and a high elastic modulus in a high-strain region above the inflection point; characterised in that the cord is composed of two or more kinds of fibers of different materials wherein the material of the cord contains at least polyethylene terephthalate; wherein the material applied to the cord is different to a material applied to the carcass.