In a pneumatic tire 2, a contour of an outer surface of each side portion includes a first segment that is a straight line or a circular arc, and a second segment that is a straight line or a circular arc and that is connected to an end of the first segment. The contour of the outer surface of the side portion bends outward with a connection point of the first segment and the second segment as a bending point. The first segment and the second segment are preferably straight lines.