A first belt layer includes a cord extending at an inclination angle of greater than 45° with respect to the tire circumferential direction, a second belt layer includes a cord extending in the tire circumferential direction, and a third belt layer includes a cord extending at an inclination angle of 30° or less in the opposite direction from the cord of the first belt layer with respect to the tire circumferential direction. The belt layers are arranged in order, with the first belt layer furthest inward in the tire radial direction, on the outer circumferential side of a crown region of a carcass extending toroidally between a pair of bead portions. The third belt layer width w.sub.3 is 80% or more of the tread width w, and w.sub.2<w.sub.1<w.sub.3, where w.sub.1 is the first belt layer width, and w.sub.2 is the second belt layer width.

An object is to, in an aircraft tire, promote heat dissipation from circumferential direction grooves of a tread and improve durability of the tire. Plural circumferential direction grooves (central side circumferential direction grooves (14), edge portion side circumferential direction grooves (16)) that extend in a tire circumferential direction are formed in a tread (12). In a tire circumferential direction cross-section, a groove bottom (18) of at least one of the circumferential direction grooves has a wave shape having amplitude in a tire radial direction.

A pneumatic tire has a tread portion 2 provided with: an outboard shoulder main groove 4 and an outboard crown main groove 6 extending circumferentially of the tire; first outboard shoulder axial grooves 12a extending from an outboard tread edge Teo to the outboard shoulder main groove 4; second outboard shoulder axial grooves 12b extending from the outboard tread edge Teo and terminating without reaching to the outboard shoulder main groove 4; first outboard middle axial grooves 16 extending from the outboard shoulder main groove 4 and terminating without reaching to the outboard crown main groove 6; and second outboard middle axial groove 22 extending from the outboard crown main groove 6 and terminating without reaching to the outboard shoulder main groove 4. The first outboard middle axial grooves 16 are aligned with the first outboard shoulder axial grooves 12a, respectively, so as to smoothly continue to the first outboard shoulder axial grooves 12a through the outboard shoulder main groove 4.

A pneumatic tire has a tread portion 2 provided with: an outboard shoulder main groove 4 and an outboard crown main groove 6 extending circumferentially of the tire; first outboard shoulder axial grooves 12a extending from an outboard tread edge Teo to the outboard shoulder main groove 4; second outboard shoulder axial grooves 12b extending from the outboard tread edge Teo and terminating without reaching to the outboard shoulder main groove 4; first outboard middle axial grooves 16 extending from the outboard shoulder main groove 4 and terminating without reaching to the outboard crown main groove 6; and second outboard middle axial groove 22 extending from the outboard crown main groove 6 and terminating without reaching to the outboard shoulder main groove 4. The first outboard middle axial grooves 16 are aligned with the first outboard shoulder axial grooves 12a, respectively, so as to smoothly continue to the first outboard shoulder axial grooves 12a through the outboard shoulder main groove 4.

The invention relates to vehicle tires for utility vehicles, comprising a belt (9) and a tread profile that extends in the axial direction A of the vehicle tire between two tire shoulders, in each of which a profiled shoulder strip (19) is formed that extends over the circumference of the vehicle tire. The profiled shoulder strip is delimited in the axial direction A towards the equatorial plane Ä of the tire by a groove (20), which extends over the circumference of the vehicle tire, and on the profiled strip face facing away from the equatorial plane Ä by a respective surface of the tire lateral wall (2), which forms the profiled shoulder strip (19) flank facing away from the equatorial plane Ä. The tread profile is delimited by a surface which forms the road contact surface on the sectional planes containing the tire axis, said surface forming a surface contour line K which is curved towards the tire between the profiled shoulder strips (19). In at least one profiled shoulder strip (19), the surface which forms the road contact surface is formed as the extension of the curved surface contour line K into the profiled shoulder strip (19) in an axial first extension section (21) of the width a, said extension section adjoining the circumferential groove (20), and the radial position of the surface which forms the road contact surface constantly decreases outwards along the axial extension in a second extension section (22) of the width c, said extension section adjoining the first extension section (21) and extending to the surface of the tire lateral wall. The surface which forms the road contact surface is formed by a first sub-portion (23), which extends to a point P, and a second sub-portion (24), which extends from the point P to the surface of the tire lateral wall (2), in the second extension section (22) such that the surface which forms the road contact surface has a concave contour progression in the first sub-portion (23) and a convex contour progression in the second sub-portion (24) with a turning point of the contour progression in the point P, said point P being arranged outside of the belt (9) in the axial direction A.

A heavy truck tire tread (12) is provided that has a partially hidden longitudinal groove (22) with an undersurface channel (24) engaged by a longitudinal sipe (26). The partially hidden longitudinal groove (22) has a surface opening (28) that extends from a surface of the tread to the undersurface channel (24). The tread (12) has at least one of two features. The first feature is that the surface opening (28) extends from the surface to the undersurface channel (24) at an angle to the thickness direction such that the surface opening (28) at the surface is forward of the surface opening (28) at the undersurface channel (24) in the rolling direction (20). The second feature is that a lateral sipe (32) engages the surface opening (28) so that the first end is at the surface opening (28), and the second end is forward of the first end in the rolling direction (20).

Disclosed herein is an example of a tire, and arrangements of multiple tires for a heavy goods vehicle having a tread provided on one side of the equatorial median plane with a sculpture of a first kind and on the other side of the equatorial median plane with a sculpture of a second kind, the first kind of sculpture comprising at least three grooves of generally circumferential orientation. The tired disclosed herein is provided to avoid having to change tires at the change of season, notably of the arrival of winter, on a heavy goods vehicle and more particularly on the drive axles of the said vehicle for which these changes require additional work.

Disclosed herein is an example of a tire, and arrangements of multiple tires for a heavy goods vehicle having a tread provided on one side of the equatorial median plane with a sculpture of a first kind and on the other side of the equatorial median plane with a sculpture of a second kind, the first kind of sculpture comprising at least three grooves of generally circumferential orientation. The tired disclosed herein is provided to avoid having to change tires at the change of season, notably of the arrival of winter, on a heavy goods vehicle and more particularly on the drive axles of the said vehicle for which these changes require additional work.

A tire having a tread with a novel groove structure for enhanced wet and snow traction is provided. The groove includes an upper portion and a lower portion that can provide enhanced wet and snow traction over various stages of tread wear without unnecessary compromise to the tread rigidity. The lower portion includes one more voids for the accumulation and/or evacuation of fluids.

A tire having a tread with a novel groove structure for enhanced wet and snow traction is provided. The groove includes an upper portion and a lower portion that can provide enhanced wet and snow traction over various stages of tread wear without unnecessary compromise to the tread rigidity. The lower portion includes one more voids for the accumulation and/or evacuation of fluids.