The invention relates to a utility vehicle tire having sidewalls (2) and having a tread (1) with shoulder-side profile ribs (3), which shoulder-side profile ribs have shoulder-side profile blocks (6) which are separated from one another by transverse channels (5) and which have in each case one flank surface (6a) running in the direction of the adjoining sidewall (2), wherein, on at least one sidewall (2), there is formed a flank guard (7′) which adjoins the shoulder-side profile blocks (6) and which is elevated in relation to the level of the sidewall (2). It is the intention for the flank guard to be designed such that the risk of crack formation is greatly reduced. This is achieved in that the flank guard (7′) is formed from a multiplicity of wedge-shaped elevations (7), wherein each wedge-shaped elevation (7) adjoins the flank surface (6a) of a shoulder-side profile block (6) and has an outer surface (7a) which, in the tire cross section, transitions without a kink into the flank surface (6a) of the profile block (6).

The invention relates to a utility vehicle tire having sidewalls (2) and having a tread (1) with shoulder-side profile ribs (3), which shoulder-side profile ribs have shoulder-side profile blocks (6) which are separated from one another by transverse channels (5) and which have in each case one flank surface (6a) running in the direction of the adjoining sidewall (2), wherein, on at least one sidewall (2), there is formed a flank guard (7′) which adjoins the shoulder-side profile blocks (6) and which is elevated in relation to the level of the sidewall (2). It is the intention for the flank guard to be designed such that the risk of crack formation is greatly reduced. This is achieved in that the flank guard (7′) is formed from a multiplicity of wedge-shaped elevations (7), wherein each wedge-shaped elevation (7) adjoins the flank surface (6a) of a shoulder-side profile block (6) and has an outer surface (7a) which, in the tire cross section, transitions without a kink into the flank surface (6a) of the profile block (6).

The tire has, in a tread surface, at least one circumferential groove continuously extending in a tire circumferential direction, and a shoulder land portion partitioned with the circumferential groove and a tread ground contact edge, the shoulder land portion has a first width direction groove that extends in a tire width direction and via which the circumferential groove communicates with the tread ground contact edge, the first width direction groove has, in the first width direction groove, a second width direction groove that communicates with the first width direction groove, and respective groove widths of the circumferential groove, the first width direction groove and the second width direction groove satisfy a relational expression of “the groove width of the circumferential groove>the groove width of the first width direction groove>the groove width of the second width direction groove”.

A pneumatic tire having a toroidal tire framework member having bead portions, sidewall portions and an under tread portion, and a ground contacting tread component disposed radially outside the under tread portion. The tire framework member and the ground contacting tread component are made of a resin material, and a tensile elastic modulus of the ground contacting tread component is smaller than that of the tire framework member. The tread thickness between the radially inner surface of the under tread portion and the radially outer surface of the ground contacting tread component is such that the tread thickness X2 at a tread edge is more than 1.2 times and less than 5.0 times the tread thickness X1 at the tire equator.

A motorcycle tire comprises a carcass having a bias structure, a band comprising a jointiess ply, and a tread rubber disposed on the radially outside of the band. The loss tangent of the tread rubber at a temperature of 0 deg C. is larger in a tread crown region than in tread shoulder regions. The carcass comprises an outer carcass ply of carcass cords. The angles of the carcass cords with respect to the tire circumferential direction are smaller in the tread crown region than in the tread shoulder regions.

A motorcycle tire comprises a carcass having a bias structure, a band comprising a jointiess ply, and a tread rubber disposed on the radially outside of the band. The loss tangent of the tread rubber at a temperature of 0 deg C. is larger in a tread crown region than in tread shoulder regions. The carcass comprises an outer carcass ply of carcass cords. The angles of the carcass cords with respect to the tire circumferential direction are smaller in the tread crown region than in the tread shoulder regions.

A pneumatic tire includes a tread portion and a pair of sidewall portions each extending inwardly in a tire radial direction from the tread portion. At least one of the pair of the sidewall portions is provided with at least one side protector protruding outwardly in a tire axial direction. The side protector is provided with a groove, a cut-out portion connected with the groove, and a sipe connected with the groove.

A heavy duty pneumatic tire 2 is provided. A shoulder land portion 30s is formed on a tread 4 of the tire 2. Holes 46 are provided in the shoulder land portion 30s. Each hole 46 is provided at a position at which the hole 46 is not in contact with a normal line of an inner surface of the tire passing through an end of a tread surface 22, and a depth D of the hole 46 is not larger than a depth G of the shoulder circumferential groove 28s. The hole 46 includes an opening-side portion 92 and a hole bottom-side portion 96 connected to the opening-side portion 92 and provided radially inward of the opening-side portion 92. A width of a boundary 98 between an outer hole bottom-side portion 96A and an inner hole bottom-side portion 96B in the hole bottom-side portion 96 is 1.5 to 2.5 times a width of a radially inner end portion of the opening-side portion 92.

A heavy duty pneumatic tire 2 is provided. A shoulder land portion 30s is formed on a tread 4 of the tire 2. Holes 46 are provided in the shoulder land portion 30s. Each hole 46 is provided at a position at which the hole 46 is not in contact with a normal line of an inner surface of the tire passing through an end of a tread surface 22, and a depth D of the hole 46 is not larger than a depth G of the shoulder circumferential groove 28s. The hole 46 includes an opening-side portion 92 and a hole bottom-side portion 96 connected to the opening-side portion 92 and provided radially inward of the opening-side portion 92. A width of a boundary 98 between an outer hole bottom-side portion 96A and an inner hole bottom-side portion 96B in the hole bottom-side portion 96 is 1.5 to 2.5 times a width of a radially inner end portion of the opening-side portion 92.

A pneumatic tire includes a tread portion 16, a sidewall portion 14, a buttress portion 18, and a hollow portion 50. A cross-sectional shape of a bottom surface of the hollow portion 50 is a curved shape in which a plurality of arcs having different radii of curvature are disposed in a tire radial direction and adjacent arcs are connected at a contact point C where the adjacent arcs have a common tangent line, or is a shape in which a plurality of arcs having different radii of curvature are connected by a straight line connecting contact points where the adjacent arcs have a common tangent line. An outside end 32a, in the tire radial direction, of a sidewall rubber 32 provided on the sidewall portion 14 is located on an outside Ro in the tire radial direction from the groove bottom 36B1 of the shoulder main groove 36B.