Pneumatic tire

A pneumatic tire comprising, on a tread surface, a plurality of circumferential main grooves extending in a tread circumferential direction, and a plurality of land portions, each land portion being between circumferential main grooves adjacent in a tread width direction among the plurality of circumferential main grooves, or between one of the circumferential main grooves and a tread edge, wherein

• at least one of the land portions includes a plurality of widthwise sipes extending in the tread width direction,
• the widthwise sipes include a widened portion, on a sipe bottom side, at which a sipe width is larger than on the tread surface side,
• when the pneumatic tire is mounted on an applicable rim, filled to a prescribed internal pressure, and under no load, a sipe depth position, farthest outward in a tire radial direction, at which the sipe width of the widened portion of the widthwise sipe is 2.5 or more times an opening width of the widthwise sipe at the tread surface is a reference depth position,
• a storage modulus of tread rubber only in a tire radial direction region including the reference depth position is larger than a storage modulus of tread rubber located in regions inward and outward in the tire radial direction from the tire radial direction region,
• the tire radial direction region includes a region extending 0.5 mm inward and 0.5 mm outward in the tire radial direction from the reference depth position, and
• a thickness of the tread rubber in the tire radial direction region including the reference depth position is constant.

A pneumatic tire comprising, on a tread surface, a plurality of circumferential main grooves extending in a tread circumferential direction, and a plurality of land portions, each land portion being between circumferential main grooves adjacent in a tread width direction among the plurality of circumferential main grooves, or between one of the circumferential main grooves and a tread edge, wherein

• at least one of the land portions includes at least one circumferential sipe extending in the tread circumferential direction,
• the circumferential sipe includes a widened portion, on a sipe bottom side, at which a sipe width is larger than on the tread surface side,
• when the pneumatic tire is mounted on an applicable rim, filled to a prescribed internal pressure, and under no load, a sipe depth position, farthest outward in a tire radial direction, at which the sipe width of the widened portion of the circumferential sipe is 2.5 or more times an opening width of the circumferential sipe at the tread surface is a reference depth position,
• a storage modulus of tread rubber only in a tire radial direction region including at least the reference depth position is larger than a storage modulus of tread rubber in regions inward and outward in the tire radial direction from the tire radial direction region,
• the tire radial direction region includes a region extending 0.5 mm inward and 0.5 mm outward in the tire radial direction from the reference depth position, and
• a thickness of the tread rubber in the tire radial direction region including the reference depth position is constant.