A run flat tire comprising: a carcass extending, through a tread portion and a pair of sidewall portions, between bead cores respectively embedded in a pair of bead portions; side-reinforcing rubber layers each having a crescent-shaped cross section and respectively disposed in the pair of sidewall portions; and bead apex rubbers disposed outward of a pair of the bead cores in a tire radial direction and extending in the tire radial direction so as to be tapered, wherein each bead apex rubber includes a first bead apex rubber extending from the corresponding bead core outward in the tire radial direction, and a second bead apex rubber disposed outward of the first bead apex rubber in a tire axial direction, characterised in that the carcass includes a first carcass ply composed of a layer of a first carcass cord, and a second carcass ply composed of a layer of a second carcass cord, each of the first carcass ply and the second carcass ply includes a body portion (6a, 6c) extending between the bead cores so as to form a toroidal shape, and turned-up portions (6b, 6d) connected to the body portion (6a, 6c) and each turned up around the corresponding bead core from an inner side to an outer side in the tire axial direction, each turned-up portion of the first carcass ply extends in the tire radial direction through an outer side, in the tire axial direction, of the second bead apex rubber, and each turned-up portion of the second carcass ply extends in the tire radial direction so as to pass between the first bead apex rubber and the second bead apex rubber. a carcass extending, through a tread portion and a pair of sidewall portions, between bead cores respectively embedded in a pair of bead portions; side-reinforcing rubber layers each having a crescent-shaped cross section and respectively disposed in the pair of sidewall portions; and bead apex rubbers disposed outward of a pair of the bead cores in a tire radial direction and extending in the tire radial direction so as to be tapered, wherein each bead apex rubber includes a first bead apex rubber extending from the corresponding bead core outward in the tire radial direction, and a second bead apex rubber disposed outward of the first bead apex rubber in a tire axial direction, characterised in that the carcass includes a first carcass ply composed of a layer of a first carcass cord, and a second carcass ply composed of a layer of a second carcass cord, each of the first carcass ply and the second carcass ply includes a body portion (6a, 6c) extending between the bead cores so as to form a toroidal shape, and turned-up portions (6b, 6d) connected to the body portion (6a, 6c) and each turned up around the corresponding bead core from an inner side to an outer side in the tire axial direction, a first bead apex rubber extending from the corresponding bead core outward in the tire radial direction, and a second bead apex rubber disposed outward of the first bead apex rubber in a tire axial direction, characterised in that the carcass includes a first carcass ply composed of a layer of a first carcass cord, and a second carcass ply composed of a layer of a second carcass cord, each of the first carcass ply and the second carcass ply includes a body portion (6a, 6c) extending between the bead cores so as to form a toroidal shape, and turned-up portions (6b, 6d) connected to the body portion (6a, 6c) and each turned up around the corresponding bead core from an inner side to an outer side in the tire axial direction, each turned-up portion of the first carcass ply extends in the tire radial direction through an outer side, in the tire axial direction, of the second bead apex rubber, and each turned-up portion of the second carcass ply extends in the tire radial direction so as to pass between the first bead apex rubber and the second bead apex rubber.