A pneumatic tire comprising: a carcass toroidally extending between a pair of bead portions; an inclined belt formed by one or more inclined belt layers (3a, 3b) including cords that extend at an inclination relative to a tire circumferential direction and a circumferential belt formed by one or more circumferential belt layers (4a, 4b) including cords that extend along the tire circumferential direction, the inclined belt and the circumferential belt being provided at an outer side of a crown portion of the carcass in a tire radial direction; and a tread disposed at an outer side of the circumferential belt in the tire radial direction; wherein an inclination angle (θ 1, θ 2) of the cords in the one or more inclined belt layers (3a, 3b) relative to the tire circumferential direction is 35° or more to 90° or less; the circumferential belt has a higher tire circumferential direction rigidity per unit width in a central region including a tire equator than in other regions; and in a region of a surface of the tread including at least the tire equator, the tread includes a land portion continuous in the tire circumferential direction; characterized in that: when the internal pressure of the tire is set to 250 kPa or higher, an SW/OD ratio of the sectional width SW to the outer diameter OD of the tire is 0.26 or less if the tire has a sectional width SW of less than 165 mm, whereas the sectional width SW and the outer diameter OD of the tire satisfy the relational expression OD ≥ 2.135 × SW + 282.3 if the tire has a sectional width SW of 165 mm or greater. a carcass toroidally extending between a pair of bead portions; an inclined belt formed by one or more inclined belt layers (3a, 3b) including cords that extend at an inclination relative to a tire circumferential direction and a circumferential belt formed by one or more circumferential belt layers (4a, 4b) including cords that extend along the tire circumferential direction, the inclined belt and the circumferential belt being provided at an outer side of a crown portion of the carcass in a tire radial direction; and a tread disposed at an outer side of the circumferential belt in the tire radial direction; wherein an inclination angle (θ 1, θ 2) of the cords in the one or more inclined belt layers (3a, 3b) relative to the tire circumferential direction is 35° or more to 90° or less; the circumferential belt has a higher tire circumferential direction rigidity per unit width in a central region including a tire equator than in other regions; and in a region of a surface of the tread including at least the tire equator, the tread includes a land portion continuous in the tire circumferential direction; characterized in that: when the internal pressure of the tire is set to 250 kPa or higher, an SW/OD ratio of the sectional width SW to the outer diameter OD of the tire is 0.26 or less if the tire has a sectional width SW of less than 165 mm, whereas the sectional width SW and the outer diameter OD of the tire satisfy the relational expression OD ≥ 2.135 × SW + 282.3 if the tire has a sectional width SW of 165 mm or greater. when the internal pressure of the tire is set to 250 kPa or higher, an SW/OD ratio of the sectional width SW to the outer diameter OD of the tire is 0.26 or less if the tire has a sectional width SW of less than 165 mm, whereas the sectional width SW and the outer diameter OD of the tire satisfy the relational expression OD ≥ 2.135 × SW + 282.3 if the tire has a sectional width SW of 165 mm or greater.