Pneumatic tire

A pneumatic tire comprising one or more sipes having a depth (D) and, as seen in a widthwise section of the sipe, a perpendicular portion and a bend portion. The bend portion has, a first sub-bend point in a depth region of D/2-D/7, a main-bend point in a depth region of D/4-3D/4, and a second sub-bend point a depth region of D/2-6D/7, forming first and second inclined sections between the bend points. Each of the first and second inclined sections forms acute angles (θ1, θ2) of 30°≦θ1≦60° and 30°≦θ2≦60°, relative to a tangent of tread surface. The first inclined section has an area (a1) and the second inclined section has an area (a2), and ratios (a1/A and a2/A) of the area (a1) and (a2) to an orthographic projection area (A) of the sipe are not less than 0.1.