A pneumatic tire comprising: a tread that has a tread surface (60a, 60b); a plurality of circumferential main grooves that are formed on the tread; and a plurality of land portions that are formed, on the tread, between the plurality of circumferential main grooves, wherein each of the plurality of circumferential main grooves has, in a lateral cross-sectional view, a groove bottom surface, an outside groove wall surface located on an installation outer side, an inside groove wall surface located on an installation inner side, an outside curved portion connecting the groove bottom surface with the outside groove wall surface, and an inside curved portion connecting the groove bottom surface with the inside groove wall surface, and in the lateral cross-sectional view, the minimum curvature radius of the outside curved portion is greater than the minimum curvature radius of the inside curved portion, and an angle of the outside groove wall surface to the tread normal line at a border edge between the outside groove wall surface and the tread surface is denoted as a groove wall angle α and an angle of the inside groove wall surface to a tread normal line at a border edge between the inside groove wall surface and the tread surface is denoted as a groove wall angle β, the groove wall angle α is less than the groove wall angle β, and in the plurality of circumferential main grooves, the groove wall angle α of the circumferential main groove located on an installation outer side is greater than the groove wall angle α of the circumferential main groove located on an installation inner side, and the groove wall angle β of the circumferential main groove located on an installation outer side is greater than the groove wall angle β of the circumferential main groove located on an installation inner side. a tread that has a tread surface (60a, 60b); a plurality of circumferential main grooves that are formed on the tread; and a plurality of land portions that are formed, on the tread, between the plurality of circumferential main grooves, wherein each of the plurality of circumferential main grooves has, in a lateral cross-sectional view, a groove bottom surface, an outside groove wall surface located on an installation outer side, an inside groove wall surface located on an installation inner side, an outside curved portion connecting the groove bottom surface with the outside groove wall surface, and an inside curved portion connecting the groove bottom surface with the inside groove wall surface, and in the lateral cross-sectional view, the minimum curvature radius of the outside curved portion is greater than the minimum curvature radius of the inside curved portion, and an angle of the outside groove wall surface to the tread normal line at a border edge between the outside groove wall surface and the tread surface is denoted as a groove wall angle α and an angle of the inside groove wall surface to a tread normal line at a border edge between the inside groove wall surface and the tread surface is denoted as a groove wall angle β, the groove wall angle α is less than the groove wall angle β, and in the plurality of circumferential main grooves, the groove wall angle α of the circumferential main groove located on an installation outer side is greater than the groove wall angle α of the circumferential main groove located on an installation inner side, and the groove wall angle β of the circumferential main groove located on an installation outer side is greater than the groove wall angle β of the circumferential main groove located on an installation inner side.