Abstract: In a shoulder block row in which a plurality of shoulder blocks are disposed in a tire circumferential direction, a lateral groove between adjacent shoulder blocks in the tire circumferential direction has a first shallow groove portion that is positioned on a side close to a main groove and has a depth shallower than that of the main groove, a third shallow groove portion that is positioned on a side close to a tire ground contact end and has a depth shallower than that of the main groove, and a second shallow groove portion that is positioned between the first shallow groove portion and the third shallow groove portion, and has a depth shallower than those of the first shallow groove portion and the third shallow groove portion.

Abstract: A pneumatic tire has inner mediate land portions and center land portion(s) that are divided into a plurality of blocks by lateral grooves. Each of the lateral grooves includes a pair of wide portions opening to a main groove and a narrow portion coupling the pair of the wide portions. one-side-closed sipes are formed in a bottom of each of the lateral grooves formed in the inner mediate land portions. The one-side-closed sipes are open at the wide portions and close at the narrow portion. a both-sides-open sipe is formed in a bottom of each of the lateral grooves formed in the center land portion or portions. The both-sides-open sipe is open at the wide portions and at the narrow portion.

Abstract: A pneumatic tire includes a tread having a pattern formed thereon, in which the tread includes at least two main grooves extending in the tire circumferential direction; a plurality of lateral slits that are each a groove extending in a direction intersecting the tire circumferential direction formed, in at least one of ribs excluding the shoulder ribs formed in the at least two main grooves, so as to be aligned in the tire circumferential direction; and a slit bottom lateral sipe formed at the bottom of every two in the tire circumferential direction of the plurality of lateral slits aligned in the tire circumferential direction.

Abstract: A sipe is formed in a land portion of a tread surface. The sipe has a 3D sipe portion formed into a three-dimensional shape which changes along a depth direction, and a 2D sipe portion formed into a two-dimensional shape which does not change along the depth direction. The 3D sipe portion extends in the depth direction from the tread surface and terminates at a position which does not reach a sipe bottom. The 2D sipe portion extends in the depth direction from a terminated position of the 3D sipe portion and reaches the sipe bottom. The three-dimensional shape of the 3D sipe portion is formed into a sideways V-shaped form which is bent at one position in the depth direction. Both ends of the sipe are closed within the land portion.

Abstract: A pneumatic tire has a sipe formed in a land portion of a tread surface. The sipe has a 2D center portion, a 3D center portion and 3D side portion. The 2D center portion is positioned in a sipe bottom side at a center in a length direction. The 3D center portion is positioned in a top surface side at the center in the length direction. The 3D side portion is positioned in one end or both ends in the length direction. The 3D center portion and the 3D side portion are open at the top surface. A three-dimensional shape of the 3D center portion has a structure in which wall surfaces are engageable with each other in the length direction. A three-dimensional shape of the 3D side portion has a structure in which wall surfaces are engageable with each other in the depth direction.

Abstract: In a pneumatic tire including a plurality of main grooves extending in a tire circumference direction and ribs interposed between the two main grooves out of the plurality of main grooves, the ribs include a narrow groove including first narrow groove portions extending in one direction and second narrow groove portions extending in a direction different from the one direction and being arranged alternately in a zigzag pattern, the first narrow groove portions each include a bent portion and a narrow groove bottom sipe at a groove bottom of a portion including the bent portion.

Abstract: A pneumatic tire includes a plurality of first shoulder blocks arranged in a tire circumference direction cn a main groove side in a shoulder land portion, and a plurality of second shoulder blocks arranged in the tire circumference direction on a tire ground contact end side in the shoulder land portion, in which the first shoulder blocks and the second shoulder blocks are arranged alternately in the tire circumference direction, the first shoulder blocks each include a protruding portion protruding into: a space between two of the second shoulder blocks arranged in the tire circumference direction, at least at the time of being grounded, the protruding portion overlaps in the tire circumference direction with the second shoulder blocks on both sides in the tire circumference direction.

Abstract: A pneumatic tire including a plurality of main grooves extending in a tire circumference direction and a land portion interposed between the main grooves being segmentalized by a plurality of lateral grooves to form a plurality of blocks arranged in the tire circumference direction, wherein the block includes a first protruding portion protruding from a portion on one side in a tire width direction to one side in the tire circumference direction and a second protruding portion protruding from a portion on the other side in the tire width direction to the other side in the tire circumference direction, and the second protruding portion of the block on the one side and the first protruding portion of the block on the other side overlap with each other in the tire circumference direction between the blocks adjacent to each other in the tire circumference direction.

Abstract: A pneumatic tire has inner mediate land portions and center land portion(s) that are divided into a plurality of blocks by lateral grooves. Each of the lateral grooves includes a pair of wide portions opening to a main groove and a narrow portion coupling the pair of the wide portions, one-side-closed sipes are formed in a bottom of each of the lateral grooves formed in the inner mediate land portions. The one-side-closed sipes are open at the wide portions and close at the narrow portion, a both-sides-open sipe is formed in a bottom of each of the lateral grooves formed in the center land portion or portions. The both-sides-open sipe is open at the wide portions and at the narrow portion.