Abstract: The projection portion includes a straight portion extended linearly in a predetermined direction, a first inclined portion inclined to spread toward an outer side in the predetermined direction from one end of the straight portion, and a second inclined portion inclined to spread toward an outer side in the predetermined direction from another end of the straight portion. A period defined by a length of the projection portion in the predetermined direction is 0.8 times to 2.0 times as large as a sipe depth defined by a length of the sipe between the wheel tread of a block and a bottom of the sipe.

Abstract: In the pneumatic tire according to this disclosure, a plurality of sipes on a tread surface include a large intermediate width sipe 4 having: a pair of intermediate sipe wall surface portions 61, a pair of bottom-side sipe wall surface portions 62 and a pair of tread-surface-side sipe wall surface portions 63; and within a central region of the tread surface, a spacing along a tire circumferential direction between the large intermediate width sipe and another sipe or groove is 2.0 to 4.0 times of a sipe depth D of the large intermediate width sipe.

Abstract: Wear resistance is improved. To that end, a pneumatic tire of the disclosure herein includes, on a tread surface 1, a sipe 4 extending in a direction intersecting a tire circumferential direction. A sipe width of the sipe becomes maximum at a predetermined depth direction position P1 at predetermined extending direction position P2 of the sipe, and gradually increases at the predetermined depth direction position P1 from both ends in the sipe extending direction to the predetermined extending direction position P2, and also gradually increases at the predetermined extending direction position P2 from both ends in the sipe depth direction to the predetermined depth direction position P1.

Abstract: The projection portion 150 includes a straight portion 152 extended linearly in a predetermined direction, a first inclined portion 151 inclined to spread toward an outer side in the predetermined direction from one end of the straight portion 152, and a second inclined portion 153 inclined to spread toward an outer side in the predetermined direction from another end of the straight portion 152. A period defined by a length of the projection portion 150 in the predetermined direction is 0.8 times to 2.0 times as large as a sipe depth defined by a length of the sipe 100A between the wheel tread of a block 20A and a bottom of the sipe 100A.

Abstract: In the pneumatic tire according to this disclosure, a plurality of sipes on a tread surface include a large intermediate width sipe 4 having: a pair of intermediate sipe wall surface portions 61, a pair of bottom-side sipe wall surface portions 62 and a pair of tread-surface-side sipe wall surface portions 63; and within a central region of the tread surface, a spacing along a tire circumferential direction between the large intermediate width sipe and another sipe or groove is 2.0 to 4.0 times of a sipe depth D of the large intermediate width sipe.

Abstract: Wear resistance is improved. To that end, a pneumatic tire of the disclosure herein includes, on a tread surface 1, a sipe 4 extending in a direction intersecting a tire circumferential direction. A sipe width of the sipe becomes maximum at a predetermined depth direction position P1 at predetermined extending direction position P2 of the sipe, and gradually increases at the predetermined depth direction position P1 from both ends in the sipe extending direction to the predetermined extending direction position P2, and also gradually increases at the predetermined extending direction position P2 from both ends in the sipe depth direction to the predetermined depth direction position P1.