A tire has a tread portion 2. The first middle land region 11 is provided with bend grooves 15 each having a first end 15a and a second end 15b. The first end 15a is connected to the first shoulder circumferential groove 5. The second end 15b is connected to one of the bend grooves 15 next in one of two opposite circumferential directions. Each bend groove 15 has two bent portions 16 and 17 at which the groove is bent. The bent angle θ1 at the first bent portion 16 is greater than the bent angle θ2 at the second bent portion 17.

A tread portion of a pneumatic tire includes: an intermediate land portion being delimited by an inner circumferential main groove and an outer circumferential main groove on one side in a tire lateral direction across a tire center line as a boundary; and a side land portion adjoining the outer circumferential main groove and being provided outward of the outer circumferential main groove in the tire lateral direction. At least one land portion of the intermediate land portion and the side land portion has a swelling profile line. In a region of the land portion, a composite sipe is provided. In the composite sipe, a first sipe extending linearly in a sipe depth direction and a second sipe (S2) extending in a wave manner in the sipe depth direction are connected. The second sipe in the composite sipe is disposed so as to be connected to the outer circumferential main groove.

A pneumatic tire includes a tread portion including a pair of first main grooves, a pair of second main grooves, a first land portion between the first main grooves and a pair of second land portions each sectioned adjacent one of the pair of first main grooves and one of the pair of second main grooves. The first main grooves extend in a trapezoidal wave manner including inner elements, outer elements and inclined connecting elements. One of the second land portions is provided with a second lateral groove opened at one of the outer elements. The first land portion is provided with a recess having an opening at the one of the outer elements. In a tire circumferential direction, a center of the opening of the recess is located at a position different from a position of an extension line of a centerline of the second lateral groove.

A tread for a tire includes: a first tread zone extending circumferentially, continuously, and entirely around the tire, the first tread zone being formed of a first compound; a second tread zone extending circumferentially, continuously, and entirely around the tire, the second tread zone being formed of a second compound different from the first compound; and a boundary groove axially separating the first tread zone from the second tread zone, the first tread zone, the second tread zone, and the boundary groove entirely forming the tread, the boundary groove having an axial centerline disposed an axial distance from an equatorial plane of the tire. The first tread zone has a first circumferential groove and a sidewall portion defining an intermediate circumferential rib of the first tread zone and a shoulder circumferential rib of the first tread zone.

A pneumatic tire includes land portions defined by grooves, and sipes that are formed in the land portions and intersect the grooves. The sipes form acute angle portions and obtuse angle portions with the grooves. Notches are formed in the obtuse angle portions.

A tread pattern of a pneumatic tire includes circumferential main grooves, a land portion defined by the circumferential main grooves in the lateral direction, and sipes at intervals in a circumferential direction, the sipes connecting the circumferential main grooves with each other. Each of the sipes has a peak-like shape protruding to a first side in the circumferential direction. When, in a profile cross-section of the tread portion taken along the lateral direction, an arc passing through two land portion edge points at which a tread surface of the land portion is connected with groove wall surfaces of the circumferential main grooves and having a center point positioned on the equator line is set to a standard profile line, a profile line formed by the tread surface of the land portion is a swelling profile line protruding outward of the standard profile line in a radial direction.

A tire has a first block that is partitioned by a first pair of major grooves, the first block land making up a first block column arranged along a tire circumferential direction. The first block land has a first closed sipe and a first open sipe. The first closed sipe appears wavelike as seen in plan view, extends in a tire width direction, and has two ends that respectively terminate within the first block. The first open sipe appears wavelike as seen in plan view and has two ends that respectively open into the first pair of major grooves central location in the tire circumferential direction of the first block land. An amplitude of the first open sipe is greater than amplitude of the first closed sipe. A wavelength of the first open sipe is less than wavelength of the first closed sipe.

The tread has a total width W and is provided with circumferential cuts that have a mean depth at least equal to 70 mm and at most equal to the thickness of wearable material. The circumferential cuts divide the tread into a middle region with an axial width Wm of 50% to 80% of the total width W. The middle region has transverse or oblique sipes opening into the circumferential cuts and closing at least in part when they enter the contact patch. The sipes have a depth at least equal to 75% of the depth of the circumferential cuts and delimit elements of material of height equal to the mean depth H of the said sipes and of circumferential length B equal to the mean distance between two sipes. For all the elements of material, the ratio H/B is greater than 0.5 and at most equal to 2.5.

The pneumatic tire includes, on a tread surface, at least two circumferential main grooves and at least one rib-like land portion defined by two of the circumferential main grooves. The rib-like land portion includes neither grooves nor sipes that extend to include a widthwise center line of the rib-like land portion. The rib-like land portion includes a one-end-open sipe and a both-end-closed sipe. The one-end-open sipe has a widthwise sipe portion and a circumferential sipe portion, the widthwise sipe portion extending in tire width direction from one end of the one-end-open sipe and being terminated within the rib-like land portion, and the circumferential sipe portion being located closer to the widthwise center line than the both-end-closed sipe, extending in tire circumferential direction from the widthwise sipe portion, and being terminated at another end of the one-end-open sipe.

Tire tread (1) is divided into central part (20) and edge parts (30), central part (20) having width Lc between 40% and 90% of total width W of the tread. Edge parts (30) do not have any transverse cuts. Central part (20) has a tread pattern with circumferentially oriented sipe (21) and transversely oriented sipes (22, 22, 22) distributed around the periphery of the tread, such sipes having a depth at least equal to 60% of thickness E of material to be worn away and being interconnected to form a network. Such sipes are continued by hidden channels (210, 220). Central part (20) is delimited axially by transverse sipes (22, 22), each of which ends in end channel (221, 221) that opens onto tread surface (10) and extends into the thickness of the tread, and each end channel (221, 221) is connected to the network formed by the hidden channels.