Provided is a pneumatic tire. In a tire meridian cross-sectional view of an unloaded state in which regular internal pressure is applied, a tire profile between two ground contact edges is constituted by two tire outer side profiles each having a dimension along the tire profile of 20% or more and 35% or less with respect to a dimension between the ground contact edges along the tire profile, and a tire inner side profile other than the two tire outer side profiles, the tire outer side profiles being constituted by at least four curved lines having different shapes.

The tread has a contact face which is provided with a plurality of grooves opening to the contact face and a plurality of contact elements being delimited by the plurality of grooves. Each contact element has a top face constituting a part of the contact face and at least two incisions opening to the top face and extending radially inward of the contact elements. The incisions include at least one thin incision that is delimited via two opposed thin incision faces having a width t1 and at least one thick incision being delimited via two opposed thick incision faces having a width t2. The width t2 is thicker than the width t1. The at least one thick incision comprises at least one protrusion protruding from one of the thick incision face toward another thick incision face. The width t2 of the at least one thick incision is at least equal to 1.0 mm.

A non-pneumatic tire includes a lower ring having a first diameter and an upper ring having a second diameter greater than the first diameter. The upper ring is substantially coaxial with the lower ring. The non-pneumatic tire further includes support structure extending between the lower ring and the upper ring and a tread layer formed of a rubber material. The non-pneumatic tire also has a sidewall formed of the rubber material and extending seamlessly from the tread layer on a first side of the non-pneumatic tire.

A tire according to the present disclosure is a tire including, in a tread surface, a block-shaped land portion partitioned by a partitioning groove or by the partitioning groove and a tread edge. The block-shaped land portion includes a first sipe and a second sipe extending from different positions in a surface of the block-shaped land portion inwardly in a tire radial direction. The first sipe includes, on a side of a sipe bottom, a widened portion with a larger sipe width than a side of the tread surface. The second sipe includes a plurality of holes recessed inwardly in the tire radial direction in a sipe bottom at positions separate in a sipe longitudinal direction.

A non-pneumatic tire includes a lower ring having a first diameter and an upper ring having a second diameter greater than the first diameter. The upper ring is substantially coaxial with the lower ring. The non-pneumatic tire further includes support structure extending between the lower ring and the upper ring. The non-pneumatic tire also includes a flexible cover having an annulus shape that covers at least a portion of a first side of the support structure, wherein a lower portion of the flexible cover includes a circumferential projection that projects axially outward relative to a region above the circumferential projection.

Present disclosure provide a tread for a tire having a plurality of grooves formed in the tread, a plurality of contact elements delimited by a plurality of grooves and having circumferential surfaces, transverse surfaces and a contact surface intended to come into contact with ground during rolling, the contact element having a height H, and at least one connecting member connecting the transverse surface of the contact element to the transverse surface of the circumferentially adjacent contact element, a distance h between one of the connecting members and the contact face is at most equal to 30% of the height H, and a material of the connecting member is different from a material of the contact element, and a Young modulus of the material of the connecting member is higher than a Young modulus of the material of the contact element.

A pneumatic tire includes a first tread-half region from the tire equator to a first tread edge. In the first tread-half region, a crown land portion and a middle land portion are not provided with any grooves having widths equal to or more than 2 mm. In the first tread-half region, crown, middle and shoulder portions are respectively provided with a first crown sipe, a first middle sipe and a first shoulder sipe each having a width less than 2 mm. The first crown sipe, the first middle sipe and the first shoulder sipe are respectively configured as arc shapes having radiuses R1, R2 and R3 of curvature to protrude in a first circumferential direction side, wherein the radiuses R1, R2 and R3 are satisfied the following relation: R1<=R2<=R3, and R1<R3.

A tread portion is provided with a first block and a second block, which protrudes outward in a tire width direction more than the first block, alternately in a tire circumferential direction in a shoulder region. A first projection is provided in an outer side of the first block, and a second projection is provided in an outer side of the second block. An outside end of the second projection is connected to a side surface of the second block and is arranged closer to an outer side in the tire diametrical direction than an outside end of the first projection. An angle θ1 formed by a side surface of the first projection and a surface of the side wall portion is equal to or smaller than an angle θ2 formed by a side surface of the second projection and the surface of the side wall portion.

A tread for a heavy truck tire is provided that has a bottom surface (14), a shoulder rib (16), and a sacrificial rib (20) located outboard from the shoulder rib (16) in a width direction. A decoupling void (30) is located between the shoulder rib (16) and the sacrificial rib (20). First decoupling void sipes (32), second decoupling void sipes (100) and third decoupling void sipes (104) are in the shoulder rib (16), and one second decoupling void sipe (100) is between one first decoupling void sipe (32) and one third decoupling void sipe (104). The first and third decoupling void sipes (32, 104) are closer to the bottom surface (14) than is the decoupling void (30) in the thickness direction. The second decoupling void sipe (100) is not closer to the bottom surface (14) than is the decoupling void (30) to the bottom surface (14) in the thickness direction.

The tire includes a lateral groove formed in a tread section and extending in a tire width direction. One groove wall forming the lateral groove includes an inclined surface with curved shape. The inclined surface has an inclination angle, the inclination angle being an angle with respect to a tire radial direction from a groove bottom to a tread surface in a cross section perpendicular to a tire axial direction, that gradually increases from an inner side in the tire width direction on a tire equatorial line side to an outer side in the tire width direction.