Pneumatic tire

A pneumatic tire, comprising:

• a tread portion extending in a tire circumferential direction, having an annular shape, and having a tread pattern,
• the tread pattern comprising:
• a continuous land portion provided in a half tread region on each of a first side and a second side across a tire equator line, each continuous land portion formed continuously in an entire circumference in the tire circumferential direction;
• an outer circumferential main groove defining each continuous land portion in each half tread region from an outer side in a tire lateral direction, each outer circumferential main groove continuously extending in the tire circumferential direction;
• and
• first sipes each extending inward in the tire lateral direction from each outer circumferential main groove and being closed in a middle of a region of each continuous land portion,
• the first sipes each comprising:
• a sipe main body portion having a constant distance in a sipe depth direction between facing sipe wall surfaces on a sipe bottom side of the first sipes in the sipe depth direction;
• and
• a sipe chamfered portion inclined to have a distance between facing sipe wall surfaces of the first sipes on a side of a tread surface, the distance increased as approaching the tread surface,
• of the first sipes, first sipes a on the first side each comprising:
• a first extending portion having an edge shape, as seen from the tread surface, extending inward in the tire lateral direction from the outer circumferential main groove on the first side while keeping an extension direction thereof unchanged or changing the extension direction smoothly;
• and
• a bent portion being provided to be joined to an end of the first extending portion inward in the tire lateral direction, the bent portion having the edge shape extending to be bent from the extension direction of the end of the first extending portion toward the tire circumferential direction,
• every portion of the first extending portion and the bent portion of each of the first sipes a being provided with the sipe main body portion and the sipe chamfered portion,
• of the first sipes, first sipes b on the second side each comprising a second extending portion having an edge shape as seen from the tread surface, extending inward in the tire lateral direction from the outer circumferential main groove on the second side while keeping an extension direction thereof unchanged or changing the extension direction smoothly, and
• the first sipes b each comprising an end of the second extending portion as a closed end of each of the first sipes b, wherein
• the edge shape of the bent portion as seen from the tread surface is an arrow shape, a distal end thereof pointing in an extension direction of the end of the first extending portion inward in the tire lateral direction, and
• the arrow shape includes:
• in a joint portion between the first extending portion and the bent portion, a first edge and a second edge in a region on one side in a sipe width direction with respect to an arrow-direction imaginary line extending from a center position of each of the first sipes a in the sipe width direction to the distal end, the first edge extending to be inclined with respect to the arrow-direction imaginary line, the second edge extending to the distal end with smaller inclination with respect to the arrow-direction imaginary line as compared to the first edge;
• and
• a third edge in a region on the other side in the sipe width direction with respect to the arrow-direction imaginary line, the third edge extending, along an extension of the edge of the first extending portion from an edge of the first extending portion to the distal end,
• the sipe main body portion of each of the first sipes a on the first side extends to the distal end of the arrow shape,
• in the bent portion, a chamfered surface of the sipe chamfered portion on the side of the first edge and the second edge with respect to the arrow-direction imaginary line comprises:
• a first chamfered surface extending from the chamfered surface of the first extending portion along an extension of the chamfered surface of the first extending portion;
• and
• a second chamfered surface being a flat surface, which has a chamfered inclination angle different from that of the first chamfered surface, is joined to the first chamfered surface to form a ridge line, and passes through the first edge positioned on the tread surface, and
• in the bent portion, a chamfered surface of the sipe chamfered portion on the side of the third edge with respect to the arrow-direction imaginary line is a surface extending along an extension of the chamfered surface of the first extending portion.