Tire

A tire having a cross-sectional height SH ranging from 50 mm to 150 mm,

• in an unloaded state where the tire is mounted on a 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 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 a projection amount corresponding to one half of a difference between a total width TW of the tire and a rim width DW of the specified rim being defined as W, and the opening distance A with respect to the projection amount W satisfying a relationship 0.03≤A/W≤1.60, wherein
• an angle α formed by a straight line connecting points P and Q and a horizontal line in the tire width direction is in a range 50°≤α≤80°, where point P is a point at which a horizontal line in the tire width direction passing through the outermost point of the rim flange in the radial direction intersects with the outer surface of the tire and point Q is a point indicating a rim width and a rim diameter of the specified rim.