A pneumatic tire comprising: a pair of beads each located in a side portion; a carcass extending on and between the one bead and the other bead; and a pair of load support layers each located in the side portion and inward of the carcass in an axial direction, wherein a rim protector is formed in the side portion so as to project outward in the axial direction in a tapered shape, each bead includes a core and an apex extending from the core outward in a radial direction, the carcass includes a carcass ply, the carcass ply is turned up around the core from an inner side toward an outer side in the axial direction, because of this turning-up, a main portion and turned-up portions are formed in the carcass ply, when a cross-sectional height of the tire is denoted by L, a height in the radial direction from a bead base line BBL to an outer edge of the core is denoted by HC, a point on the turned-up portion at which point a height in the radial direction from the bead base line BBL is 0.35 times of the height L is denoted by P1, and a point on the turned-up portion at which point the height in the radial direction from the bead base line BBL is equal to the height HC is denoted by P2, the turned-up portion has, between the point P1 and the point P2, a shape that is a curved line projecting inward in the axial direction, a straight line, or a combination thereof, and a ratio ML/L of a radial height ML in the radial direction from the bead base line BBL to a top of the rim protector, which is the axially outermost point of the rim protector, relative to the height L is equal to or greater than 0.40 and equal to or less than 0.60, characterized in that a ratio BL/L of a height BL in the radial direction from the bead base line BBL to an end of the apex relative to the height L is equal to or greater than 0.45 and equal to or less than 0.65. a pair of beads each located in a side portion; a carcass extending on and between the one bead and the other bead; and a pair of load support layers each located in the side portion and inward of the carcass in an axial direction, wherein a rim protector is formed in the side portion so as to project outward in the axial direction in a tapered shape, each bead includes a core and an apex extending from the core outward in a radial direction, the carcass includes a carcass ply, the carcass ply is turned up around the core from an inner side toward an outer side in the axial direction, because of this turning-up, a main portion and turned-up portions are formed in the carcass ply, when a cross-sectional height of the tire is denoted by L, a height in the radial direction from a bead base line BBL to an outer edge of the core is denoted by HC, a point on the turned-up portion at which point a height in the radial direction from the bead base line BBL is 0.35 times of the height L is denoted by P1, and a point on the turned-up portion at which point the height in the radial direction from the bead base line BBL is equal to the height HC is denoted by P2, the turned-up portion has, between the point P1 and the point P2, a shape that is a curved line projecting inward in the axial direction, a straight line, or a combination thereof, and a ratio ML/L of a radial height ML in the radial direction from the bead base line BBL to a top of the rim protector, which is the axially outermost point of the rim protector, relative to the height L is equal to or greater than 0.40 and equal to or less than 0.60, characterized in that a ratio BL/L of a height BL in the radial direction from the bead base line BBL to an end of the apex relative to the height L is equal to or greater than 0.45 and equal to or less than 0.65.