A pneumatic vehicle tire with a tread comprising circumferential grooves (2) and at least one profile rib (1), which runs around in the circumferential direction and formed in which there are grooves (4) which at a groove flank (5) of a circumferential groove (2) that delimits the profile rib (1) open into it, wherein the groove flanks (5) of the circumferential groove (2) run at an angle (β) of 12° to 17° to the radial direction, thereby widening the circumferential groove (2) in the direction of the periphery of the tread. The grooves (4) run at an angle (α) of 45°±20° to the axial direction, end within the profile rib (1), have a maximum depth (t.sub.2) of 3.5 mm and open in each case into a local indentation (7), which is formed at the groove flank (5), reaches up to the periphery of the tread, is concavely rounded along the groove flank (5) and has a bottom (7a) that runs in particular parallel to the periphery of the tread and is at a distance (c), determined in the radial direction, of 0.5 mm to 2.0 mm from the deepest point of the groove (6) of the circumferential groove (2).

A tire including a tread portion, the tread portion having at least one main groove continuously extending in the tire circumferential direction, the tread portion including a rubber having a hardness at 60 C. of 58 or higher and a hardness at 0 C. of not more than 115% of the hardness at 60 C., the tread portion having a S.sub.50/S.sub.0 ratio of more than 1, wherein S.sub.0 denotes the sea proportion (%) in the tread ground contact surface of the new tire, and S.sub.50 denotes the sea proportion (%) when the tread portion is worn until the depth of the main groove reaches 50% of that of the new tire.

Provided is a tire comprising a radial direction, an axial direction, a circumferential direction, and a tire lug. The tire lug may be bounded by a plurality of surfaces. The plurality of surfaces may comprise a top surface and a first side surface oriented at a first angle to the top surface. The top surface may extending in the axial direction and the circumferential direction. The first angle may be greater than 90 degrees. The first side surface may comprise a first cavity of the first side surface. The first side surface may have a height and a width.

Taking a groove side-wall to a position at a groove depth from a tread face of lug groove as a tread-in side first inclined portion, and taking a groove side-wall from the position at groove depth to a groove bottom as a tread-in side second inclined portion, then the following A1 is set less than the following B1. When viewed in cross-section orthogonal to a length direction of the lug groove: A1 is an area of a region enclosed by an imaginary line passing through an end portion on a tread face side of the tread-in side first inclined portion and perpendicular to the tread face, by an imaginary line passing through an end portion on a groove bottom side of the tread-in side first inclined portion and orthogonal to the imaginary line, and by the tread-in side first inclined portion; and B1 is an area of a region enclosed by an imaginary line passing through an end portion on a tread face side of the tread-in side second inclined portion and perpendicular to the tread face, by an imaginary line passing through the deepest portion of the lug groove and parallel to the tread face, and by the tread-in side second inclined portion.

In a pneumatic tire, an inner second land portion includes chamfered portions and lug grooves. The chamfered portions are on an edge portion on a tire ground contact edge side of the inner second land portion and widen chamfer widths on a road contact surface of the inner second land portion in a tire circumferential direction. The lug grooves terminate in the inner second land portion at one end portion and open to central portions in a longitudinal direction of the chamfered portions at another end portion. An outer second land portion and an outer shoulder land portion include closed lug grooves terminating in the outer second land portion at one end portion. The closed lug grooves extend in the tire width direction and penetrate a circumferential narrow groove. The closed lug grooves terminate in a ground contact surface of the outer shoulder land portion at another end portion.

A tire includes a tread portion being provided with a circumferentially extending main groove to define a first land portion between the main groove and a tread edge. The main groove includes a groove bottom, an outer groove wall extending radially outwardly and inclined toward the tread edge, and an inner groove wall extending radially outwardly and inclined toward the tire equator. The groove bottom extends in a zigzag manner in a tire circumferential direction in such a manner as to alternate between a first location where the groove bottom is located nearest to the tire equator and a second location where the groove bottom is located nearest to the tread edge. An angle 2b of the outer groove wall in a groove cross-section at the second location is greater than an angle 1a of the inner groove wall in a groove cross-section at the first location.

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 pneumatic vehicle tire with a tread comprising circumferential grooves (2) and at least one profile rib (1), which runs around in the circumferential direction and formed in which there are grooves (4) which at a groove flank (5) of a circumferential groove (2) that delimits the profile rib (1) open into it, wherein the groove flanks (5) of the circumferential groove (2) run at an angle () of 12 to 17 to the radial direction, thereby widening the circumferential groove (2) in the direction of the periphery of the tread.

The grooves (4) run at an angle () of 4520 to the axial direction, end within the profile rib (1), have a maximum depth (t.sub.2) of 3.5 mm and open in each case into a local indentation (7), which is formed at the groove flank (5), reaches up to the periphery of the tread, is concavely rounded along the groove flank (5) and has a bottom (7a) that runs in particular parallel to the periphery of the tread and is at a distance (c), determined in the radial direction, of 0.5 mm to 2.0 mm from the deepest point of the groove (6) of the circumferential groove (2).

Embodiments of the disclosure include a tire tread having tread blocks (24) each defined by a pair of lateral grooves (20) each being asymmetric whereby a first portion (26) of a trailing side (TS24) the tread block is inclined and extends to a peak (28), and whereby a recess (38) projects into tread block below the first portion. Each tread block also includes a sipe (22) extending into the tread thickness from the outer, ground-engaging side of the tread, where the sipe is generally inclined relative to the direction of the tread thickness, such that as the sipe extends into the tread thickness from the outer, ground-engaging side, the sipe extends towards the trailing side (TS24) of the corresponding tread block, the sipe including a groove (40) arranged along the sipe within the tread thickness and spaced below the outer, ground-engaging side of the tread. The groove being asymmetric relative to a centerline (CL22) of the sipe.

A tire 1 includes shoulder regions 4 each provided with first lateral grooves 7 and second lateral grooves 8. Each of the first lateral grooves 7 includes an inner portion 11 that extends axially outwardly from an inner end (7i) arranged axially outside a crown main groove 3 with a space therebetween and obliquely at an angle 1 with respect to the tire axial direction, and an outer portion 12 that extends obliquely at an angle 2 smaller than the angle 1 with respect to the tire axial direction so as to cross a tread edge (Te). Each of the second lateral grooves 8 is arranged between adjacent first lateral grooves and extends axially outwardly from an inner end (8i) thereof arranged axially outside the crown main groove and obliquely in the same direction as the first lateral grooves 7 so as to terminate without reaching the tread edge (Te).