Tire

A wheel assembly comprising a tire and a specified rim, the tire comprising a carcass layer mounted between a pair of bead portions and a belt layer disposed on an outer side of the carcass layer in the tread portion, having a turned-up structure in which the carcass layer is wound up around a bead core from an inner side to an outer side of the tire, and having a cross-sectional height SH ranging from 50 mm to 150 mm,

• in an unloaded state where the tire is mounted on the specified rim and inflated to a specified internal pressure, an opening distance between the tire and a rim flange on a perpendicular line drawn from an outermost point Tr of the rim flange in a radial direction to an outer surface of the tire being defined as A, and the opening distance A with respect to the cross-sectional height SH satisfying a relationship 0.01≤A/SH≤0.16, and an opening start point at which the rim flange separates from the tire being defined as S, a point at which the perpendicular line drawn from the outermost point Tr of the rim flange in the radial direction to the outer surface of the tire intersects with the outer surface of the tire being defined as T, two perpendicular lines being drawn from the points S and T to a turned-up portion of the carcass layer, and a cross-sectional area Sr of a rubber portion contained in a region surrounded by the two perpendicular lines and the turned-up portion of the carcass layer being in a range 12 mm2≤Sr≤101 mm2, wherein
• at least along a majority of radial positions between the bead core and the belt layer, only an inner liner is disposed between a tire inner cavity and a tire inner cavity side of the carcass layer,
• when a thickness of the rubber portion on the perpendicular line drawn from the point S to the turned-up portion of the carcass layer is defined as Gl, a thickness of the rubber portion on the perpendicular line drawn from the point T to the turned-up portion of the carcass layer is defined as Gu, and the thicknesses Gl and Gu satisfy a relationship 0.40≤Gl/Gu≤0.90,
• a turned up portion of the carcass layer is in contact with a main body portion of the carcass layer from a position overlapping the belt layer in a tire width direction to either a radially outermost portion of a bead filler or a position overlapping the specified rim in the tire radial direction,
• only a side rubber is disposed between the turned up potion of the carcass layer and an outer surface of the tire at a tire maximum width position, and
• the specified rim being a rim defined, in a standard system that includes standards on which tires are based, by standards for a specific tire, the specific tire being the tire of the wheel assembly.