The invention provides a pneumatic tire capable of improving abrasion resistance and wet road traveling performance, a tire tread portion is provided with a tread divided by longitudinal and transversal furrows and having a shape of parallelogram as overlooked, and a patterned block of a sidewall surface extending from an edge of the tread to an inner side of radius direction. The trade of the patterned block comprises: a base connected with an imaginary tread and extending in any direction within the patterned block linearly or with a prescribed width, the imaginary tread is formed by a curved surface spaced by a distance equal to maximum thickness of the patterned block at outer side of a radial direction from an imaginary furrow bottom surface connected with a deepest portion of the longitudinal furrow; chamfering curved surfaces which are configured to both sides of the base and located at a position nearer the inner side of the radial direction than the imaginary tread, and whichextends while gradually increasing the distance from the imaginary tread from the base to the edge of the tread. The edge of the tread is arranged at the position as below, namely, the position that the imaginary tread is spaced by the distance of 5-40% of the maximum thickness of the patterned block at the inner side of the radial direction.