A pneumatic tire, comprising: a tread portion, a pair of sidewall portions and a pair of bead portions formed to be continuous with each other; a carcass constituted of at least one ply including a ply main body provided to extend in a toroidal shape across a pair of bead cores respectively embedded in the bead portions and respective ply turn-up portions each extending from the ply main body to be turned up around the corresponding bead core from an inner side toward an outer side in a tire axial direction, and each extending outward in a tire radial direction; and a recessed portion formed to be recessed inward in the tire axial direction at an outer surface of the tire in a region between a rim separating point and a tire maximum width position (P 3) in each sidewall portion, characterized in that: in a section taken along the tire axial direction in a non-rim assembled state where the tire has not been assembled with a rim and where a width between the pair of bead portions is set to be a nominal rim width, an angle α is defined as an angle that an outer-surface straight line (L 1), defined by a bead back face portion and passing a first intersection (P 1) and a second intersection (P 2), forms with respect to the tire axial direction; the first intersection being defined as an intersection between a straight line passing a barycenter (C 5) of the bead core and extending in parallel with the tire axial direction, and the outer surface of the tire; the second intersection being defined as an intersection between a straight line passing a point (P 6) located outward in the tire radial direction at a distance of 50 % of a maximum width (a) of the bead core in the tire radial direction from an outermost end (P 5) of the bead core in the tire radial direction and extending in parallel with the tire axial direction, and the outer surface of the tire; the angle α being in the range from 70 to 100°, in the non-rim assembled state, a rubber thickness (d) gradually decreases toward the outer side in the tire radial direction in at least a portion of a region of the tire defined in the tire radial direction and including the recessed portion, and the rubber thickness remains constant in a region of the tire that follows the at least a portion of the region of the tire defined in the tire radial direction and including the recessed portion and that extends outward in the tire radial direction to one-half a tire section height in the tire radial direction, and in the non-rim assembled state, a distance (h) defined in the tire radial direction from an intersection (P 9) between the outer-surface straight line (L 1) defined by the bead back face portion and a tangent line (L 3) of a bead base portion of the bead portion passing through a bead toe to an end portion of the ply turn-up portion is in the range from 100 to 225 % of a maximum width (b) of the bead core in the tire axial direction. in a section taken along the tire axial direction in a non-rim assembled state where the tire has not been assembled with a rim and where a width between the pair of bead portions is set to be a nominal rim width, an angle α is defined as an angle that an outer-surface straight line (L 1), defined by a bead back face portion and passing a first intersection (P 1) and a second intersection (P 2), forms with respect to the tire axial direction; the first intersection being defined as an intersection between a straight line passing a barycenter (C 5) of the bead core and extending in parallel with the tire axial direction, and the outer surface of the tire; the second intersection being defined as an intersection between a straight line passing a point (P 6) located outward in the tire radial direction at a distance of 50 % of a maximum width (a) of the bead core in the tire radial direction from an outermost end (P 5) of the bead core in the tire radial direction and extending in parallel with the tire axial direction, and the outer surface of the tire; the angle α being in the range from 70 to 100°, in the non-rim assembled state, a rubber thickness (d) gradually decreases toward the outer side in the tire radial direction in at least a portion of a region of the tire defined in the tire radial direction and including the recessed portion, and the rubber thickness remains constant in a region of the tire that follows the at least a portion of the region of the tire defined in the tire radial direction and including the recessed portion and that extends outward in the tire radial direction to one-half a tire section height in the tire radial direction, and in the non-rim assembled state, a distance (h) defined in the tire radial direction from an intersection (P 9) between the outer-surface straight line (L 1) defined by the bead back face portion and a tangent line (L 3) of a bead base portion of the bead portion passing through a bead toe to an end portion of the ply turn-up portion is in the range from 100 to 225 % of a maximum width (b) of the bead core in the tire axial direction.