It is provided a pneumatic tyre, the tyre having a circumferential direction, an axial direction and an equatorial plane, and the tyre comprising: a tread extending in a tyre circumferential direction, said tread comprising at least one circumferential groove running continuously in the circumferential direction, and a plurality of axial grooves or transverse grooves running at an angle to the axial direction, and a plurality of blocks defined by the circumferential groove and the axial grooves or transverse grooves, said blocks extending radially between an inner surface of the tread and a tread surface to come into contact with the ground, wherein at least some of the blocks comprise at least one wavy groove that extends from a circumferential groove inwardly into the block, and wherein the wavy groove has a depth extending radially from the tread surface to come into contact with the ground towards the inner surface that ends above the inner surface (26) of the tread.

A tire has a tread portion comprising: a crown land zone provided with a crown auxiliary groove and crown lateral grooves; and a shoulder land zone provided with a shoulder auxiliary groove and shoulder lateral grooves. The axial width of the shoulder land zone is larger than the axial width of the crown land zone. The groove widths of the crown auxiliary groove and the shoulder auxiliary groove are smaller than that of a shoulder main groove. The lateral crown groove comprises a radially outer wide portion and a radially inner narrow sipe-like portion.

A pneumatic tire includes two circumferential main grooves disposed in an inner half of a tread developed width in a tire lateral direction; shoulder lug grooves that divide shoulder land portions into shoulder block portions and that each include a see-through portion in the tire lateral direction; center lug grooves dividing a center land portion into a plurality of center block portions; and center sipes having both ends terminated in the center block portions. The center sipe includes at least two sipe portions having different angles via at least one bent portion. An angle θ.sub.1 of at least one sipe portion with respect to a tire equator line satisfies 0°≤θ.sub.1≤15°, and an angle θ.sub.2 of at least the other sipe portion with respect to the tire equator line satisfies 35°≤θ.sub.2≤60°.

A pneumatic vehicle tire, in particular a commercial vehicle tire, having a tread with transverse grooves (3, 3′), which are continuous over the tread width and which, at least in sections, are formed to the profile depth and are the main grooves of the tread. Circumferential grooves (4) that run adjacent to one another in pairs and parallel to one another, at an angle (α) with respect to the circumferential direction of 10° to 30° and have a smaller depth than the profile depth divide the tread, with two sections (4a) in each case between three transverse grooves (3, 3′) following one another in the circumferential direction, into profile blocks (1, 2), wherein pairs of circumferential grooves following one another in the circumferential direction are offset with respect to one another in the axial direction, such that the circumferential grooves (4) of the pairs of circumferential grooves begin and end at substantially the same axial positions, wherein each circumferential groove (4) reaches, with a section (4b) running beyond a transverse groove (3), into a middle profile block (2) present between the circumferential grooves (4), and wherein each circumferential groove (4) is formed shallower in at least one section (4a, 4b) than in its other sections or its other section.

The tire (10) for a passenger vehicle has an axially central portion and axially lateral portions. The axially central portion and each axially lateral portion satisfies just one of conditions I, II, III: I—the portion comprises no transverse cut (90, 90′), II—the portion comprises N transverse cuts (90, 90′) arranged in such a way that π×OD/N≥40 mm, III—the portion comprises N transverse cuts (90, 90′) arranged in such a way that π×OD/N≤24 mm, condition I or II being satisfied by the axially central portion or by an axially lateral portion, and condition III being satisfied by the axially central portion or by an axially lateral portion.

A pneumatic tire includes a lateral groove that includes a groove bottom surface extending in a direction crossing a tire circumferential direction, and a protrusion provided on the groove bottom surface and extending in an extension direction of the groove bottom surface. The protrusion includes a main body, and an end portion provided on at least one side in a longitudinal direction of the main body and shaped such that a height of the protrusion from the groove bottom surface decreases from an inside to an outside in the longitudinal direction of the main body. The end portion includes an upper surface that forms a circular arc recessed inward in a tire radial direction in a cross section crossing a width direction of the protrusion.

A pneumatic tire includes a shoulder land defined by a circumferential groove having a width of ≥3 mm on a tread and width-direction grooves in the shoulder land. The width-direction grooves include lug grooves having a width at a position at a center of the shoulder land in the width direction of ≥1.5 mm and a depth of ≥50% of a maximum depth of the width-direction grooves on a circumference. Blocks defined by the lug grooves have circumferential lengths varying at the position. A maximum-to-minimum ratio of circumferential lengths of the blocks is ≥1.2 and ≤1.8. The number of blocks on the circumference is N, the circumferential lengths of the blocks are sequentially P.sub.1, P.sub.2, . . . , P.sub.N, the circumferential length of any block is P.sub.i (i=1 to N), the number of blocks satisfying P.sub.i/min(P.sub.i−1, P.sub.i+1)≤0.95 is M.sub.1, the number of blocks satisfying 2P.sub.i/(P.sub.i−1+P.sub.i+1)≤0.95 is M.sub.2, an index R satisfies 0≤R=((M.sub.1.Math.M.sub.2).sup.1/2/N)≤0.2.

The tire includes a tread portion having a plurality of circumferential grooves and land regions. The land regions include a crown land region and a first middle land region. The crown land region has a plurality of crown lateral grooves. The first middle land region has a plurality of first middle lateral grooves. In a tread plan view, an angle between a first linear line connecting both ends of each of the crown lateral grooves and a second linear line connecting both ends of a respective one of the first middle lateral grooves is 90 degrees or more and 150 degrees or less. Each of the crown lateral grooves includes a first end portion, a second end portion, and a center portion. The center portion has a groove width smaller than a groove width of the first end portion and a groove width of the second end portion.

A tire includes a pair of shoulder land regions each provided with a plurality of wavy sipes and first shoulder lateral grooves each having a groove width of 2 mm or less and larger than a width of each of the wavy sipes. The tire further includes a pair of middle land regions and a crown land region each provided with a plurality of non-wavy sipes.

Tread of a tire for an agricultural vehicle having each lug (3) extending over a radial height H in a radial direction (ZZ′) from a bottom surface (5) to a contact face (6), extending over an axial width L in an axial direction (YY′) from an axially inner end face (7) to an axially outer end face (8), and extending over a mean thickness E in the circumferential direction (XX′) from a trailing face (9) to a leading face (10). The leading face (10) of each lug (3) comprises a discontinuity (11) that extends circumferentially in the direction of the trailing face (9), axially inwards from the axially outer end face (8) and radially inwards from the contact face (6). The discontinuity (11) on the leading face (10) of each lug (3) is continued by a recess (12) formed in the bottom surface (5).