A tread portion includes a land portion provided with lateral groove-shaped elements arranged in a first array. Each lateral groove-shaped element extends from a first end to a second end. In the first array, the second end of one of the lateral groove-shaped elements is located at the circumferential same position as the first end of another of the lateral groove-shaped elements. Each lateral groove-shaped elements includes a first portion on the first end side, a second portion on the second end side, and a third portion therebetween. The first, second, and third portions are inclined in the same direction. An angle θ3 of the third portion to the tire circumferential direction is smaller than angles θ1 and 02 of the first and second portions, and a length of the third portion is greater than a sum of lengths of the first and second portions.

A tread portion includes land portions divided by circumferential grooves. The land portions are provided with a set of lateral groove-shaped elements inclined with respect to tire axial and circumferential directions. Each lateral groove-shaped elements includes a circumferential first and second ends. The set of lateral groove-shaped elements is arranged in a first array over an entire circumference of the tire. The first array is such that in each of all pairs of two lateral groove-shaped elements adjacent to each other in the tire circumferential direction of the lateral groove-shaped elements, the first end of one of the two lateral groove-shaped elements is located at a circumferential same position as the second end of the other one of the two lateral groove-shaped elements. Two lateral groove-shaped elements included in at least one pair of the all pairs are formed on different land portions from one another.

A pneumatic tire includes a circumferential main groove extending in a tire circumferential direction, a land portion defined by the circumferential main grooves, and a sipe disposed in the land portion. The sipe is formed in a zigzag shape that has an amplitude in a width direction of the sipe while extending in a longitudinal direction of the sipe. A magnitude of the amplitude changes according to a position in a depth direction of the sipe. A depth of a maximum amplitude portion from an opening portion of the sipe in the depth direction of the sipe is located at a position 30% or more of a maximum depth of the sipe. The maximum amplitude portion is a portion where a magnitude of the amplitude is maximum.

A tire has a tread portion including a first shoulder land region. The first shoulder land region is provided with first shoulder sipes. Each of the first shoulder sipes is provided with a chamfered portion over an entire lengthwise range from a first longitudinal edge to a first tread edge. Each of the chamfered portions includes a first chamfered portion defined between a shoulder center position and the first longitudinal edge and a second chamfered portion defined between the shoulder center position and the first tread edge. The second chamfered portion has a chamfer volume larger than a chamfer volume of the first chamfered portion.

A tire has a tread portion including a first shoulder land region. The first shoulder land region is provided with first shoulder sipes. Each of the first shoulder sipes is provided with a chamfered portion over an entire lengthwise range from a first longitudinal edge to a first tread edge. Each of the chamfered portions includes a first chamfered portion defined between a shoulder center position and the first longitudinal edge and a second chamfered portion defined between the shoulder center position and the first tread edge. The second chamfered portion has a chamfer volume smaller than a chamfer volume of the first chamfered portion.

In a pneumatic tire including main grooves extending in a tire circumferential direction in a tread portion, and including a sipe extending in a tire lateral direction on a rib defined by the main grooves, the sipe includes an edge on a leading side and an edge on a trailing side, chamfered portions shorter than a sipe length of the sipe are formed on respective edges, non-chamfered regions on which no other chamfered portion exists exist on portions opposing to respective chamfered portions in the sipe, a maximum depth x (mm) of the sipe and a maximum depth y (mm) of the chamfered portion satisfy x×0.1≤y≤x×0.3+1.0, and a sipe width of the sipe is constant in a range from an end portion positioned inside in a tire radial direction of the chamfered portion to a groove bottom of the sipe.

A tire comprises a tread portion whose shoulder land part is provided with a narrow circumferential groove having an axially inner wall surface, an axially outer wall surface and a groove bottom including a deepest point. The axially inner wall surface has a radially inner curved portion concaved toward the axially inside, and the axially outer wall surface has a radially inner curved portion concaved toward the axially outside. the radially outer end of the radially inner curved portion of the axially inner wall surface is positioned radially inside the radially outer end of the radially inner curved portion of the axially outer wall surface.

A heavy duty tire comprises a tread portion having circumferential grooves and land portions. The circumferential grooves include two shoulder circumferential grooves and a crown circumferential groove. The land portions include two of shoulder land portions and two crown land portions. The width W3 of the shoulder land portion is 17% to 28% of the tread width TW. The crown land portion is divided by crown shallow groove into crown blocks. The groove depth of the crown shallow groove is smaller than the groove depth of the crown circumferential groove. The groove bottom of the crown shallow groove is provided with a groove bottom sipe. The ground contacting top surface of the crown block is hexagonal, and the maximum circumferential dimension is 100% to 200% of the maximum axial dimension.

Each sipe wall surface of a sipe in a tread portion of a pneumatic tire includes, along a sipe depth direction, multiple ridge portions and at least one valley portion bending like waves. Where viewed along the sipe depth direction, a recess depth of the valley portion with respect to the ridge portion on one wall surface varies depending on a position in the extension direction, the valley portion extends from a position at which the recess depth is maximized toward a position at which the recess depth is minimized, and the recess depth decreases as the valley portion extends from the side of the maximum-depth valley portion toward the maximum ridge portion. The sipe is provided in at least one of a first half-tread region on a first side or a second half-tread region on a second side in a tire width direction.

A tire comprises a tread portion comprising a shoulder land region provided with shoulder lateral grooves and circumferential sipes connecting between the shoulder lateral grooves. The shoulder lateral grooves are each provided with a chamfer. The circumferential sipes are each spaced apart from an axially inner end of the shoulder land region by an axial distance of from 30% to 100% of an axial width of the shoulder land region. The depths of the circumferential sipes are equal to or greater than the groove depths of the shoulder lateral grooves.