Pneumatic tire

A pneumatic tire, comprising:

• in a tread portion,
• a plurality of main grooves extending in a tire circumferential direction;
• a plurality of rows of ribs defined by the plurality of main grooves;
• and
• a sipe extending in a tire width direction,
• the sipe comprising at least one end communicating with the main groove and an edge on a leading side and an edge on a trailing side, the edges facing each other,
• a chamfered portion shorter than a sipe length of the sipe being formed in each of the edge on the leading side and the edge on the trailing side,
• a non-chamfered region where other chamfered portions are not present being provided in a portion of the sipe facing each of the chamfered portions,
• a profile line defining a road contact surface of the rib comprising the sipe projecting further to an outer side in a tire radial direction than a reference tread profile line in a meridian cross-sectional view,
• a radius of curvature TR (mm) of an arc forming the reference tread profile line and a radius of curvature RR (mm) of an arc forming the profile line of the rib satisfying a relationship of TR>RR,
• the chamfered portions on both the leading side and the trailing side of the sipe being disposed straddling a maximum projection position of the profile line of the rib, and
• a maximum projection amount D (mm) of the rib with respect to the reference tread profile line and a maximum width W (mm) of the chamfered portion on at least one of the leading side and the trailing side of the sipe satisfying a relationship of 0.05 mm2<W×D<1.50 mm2.