Pneumatic tire

A pneumatic tire, comprising a belt comprising at least one belt layer on a tire radial-direction inner side of a tread portion,

• wherein
• the belt comprises a belt layer in which a reinforcing element comprising plural metal filaments aligned in a single row without being twisted together is embedded in an elastomer,
• the tread portion comprises:
• two or more circumferential main grooves arranged within a width of a ground-contact surface;
• and land portions partitioned by the circumferential main grooves,
• when two land portions on respective tread width-direction outer sides are defined as shoulder land portions while land portions on a tread width-direction inner side than the shoulder land portions are defined as center land portions, a widthwise sipe extending in the tread width direction is arranged in at least one of the center land portions,
• the widthwise sipe comprises:
• a linear portion linearly extending from the surface of the tread portion toward the tire radial-direction inner side;
• and a bent portion extending from a tire radial-direction inner end of the linear portion toward the tire radial-direction inner side while bending in a tire circumferential direction,
• a linear shortest section where the length of the linear portion is the shortest exists in an extending length center portion of the widthwise sipe,
• the length of the linear portion increases from the linear shortest section toward at least one of tread widthwise end portions;
• an amplitude of the bent portion varies in the extending length center portion of the widthwise sipe such that the amplitude is larger on a bottom side than on an opening side, and
• the amplitude is constant in the tread widthwise end portions of the widthwise sipe.