Pneumatic tire

A pneumatic tire comprising:

• a tread portion comprising a plurality of tread blocks comprising at least one constricted block having a first recess disposed on axially one side of the block and a second recess disposed on axially other side of the block so as to form a narrow portion between the first recess and the second recess;
• each of the first recess and the second recess comprising a V-shaped top edge comprising a vertex on a ground contacting surface of the block;
• the V-shaped top edge of each of the first recess and the second recess comprising a long inclined segment and a short inclined segment inclined in an opposite direction to the long inclined segment, the short inclined segment having a segment end on an opposite side of the vertex and the long inclined segment having a segment end on an opposite side of the vertex, wherein the segment end of the short inclined segment is located outwardly of the segment end of the long inclined segment in a block width direction, and
• each of the V-shaped top edges protruding toward a center of the block in a planar view of the block such that an axial distance between the vertexes of the V-shaped top edges of the first and second recesses is in a range of from 0.30 to 0.45 times a maximum axial width of the constricted block,
• wherein another block is disposed adjacent to the constricted block such that a part of the another block crosses a line drawn between the segment ends of the short and long inclined segments of the first or second recess.