Tread profile of a pneumatic vehicle tyre—in particular for commercial vehicles—comprising a regroovable tread profile with radially raised profile elements (1, 2, 3, 4, 5) and with grooves (6, 7, 8, 9), which respectively separate two adjacent profile elements (1, 2, 3, 4, 5) from one another, wherein the grooves (6, 7, 8, 9) are bounded inwards in the radial direction R by a groove base (10) and on both sides in the axial direction by a profile element flank, forming the groove wall (12, 13), and wherein at least one regrooving indicator (14) for indicating the regrooving depth is respectively formed in one or more grooves (3), characterized in that, in at least one groove (8), all of the regrooving indicators (14) formed therein are formed in a groove wall (12) at a height H measured in the radial direction R of H>0 mm above the groove base (10), wherein the height H corresponds to the maximum radial abrasion position of the tyre for regrooving.

A tire includes a reinforcing rib formed on a groove to prevent irregular wear of a tread and including an auxiliary hidden groove formed in the groove to enhance capabilities of water absorption and drainage of the tire even when the reinforcing rib is formed on the groove. The tire can include a reinforcing rib coupled to a first sidewall, which is one of both sidewalls forming the groove, and protruding toward the groove from the first sidewall, a hidden groove formed in one portion of a second sidewall which is the other of the sidewalls forming the groove, and a remaining tread part protruding toward the groove from a side surface of the hidden groove, the remaining tread part being the other portion of the second sidewall.

A tire includes a tread portion. The tread portion is provided with grooves each having a pair of groove walls. At least one of the groove walls is provided on a surface thereof with a pattern portion having a plurality of micro-protrusions. The pattern portion is provided with the micro-protrusions at a density of 1 to 5 per 1 mm.sup.2 of the groove wall area.

The molding element has a molding surface for forming a contact face of the contacting elements and a groove forming rib portion for forming the groove. The groove forming rib portion has opposed rib side faces for forming opposed groove side faces and a rib top face connecting the rib side faces for forming a groove bottom. The groove forming rib portion provides at least one space opening to at least one of the rib side faces and/or to the rib top face and an insert is received in the space. The insert is composed of a plurality of thin plates stacked in a direction along which the rib extends and comprises at least one notched plate of thickness t1 including at least one notch for forming a flexible fence of the closing device; and comprises at least one support plate of thickness t2 without notch.

A circumferential groove has a groove bottom and a pair of groove walls. Groove bottom includes groove bottom protruding portions protruding radially outwardly from a groove bottom reference surface and having a first groove bottom surface extending radially. The first groove bottom surface includes a first surface portion on one side of a center line of the circumferential groove and a second surface portion positioned on the other side, and an angle between them is 20° to 170°. The groove wall includes groove wall protruding portions protruding toward an inside of the circumferential groove from a groove wall reference surface defined as a circumferential surface at a widest groove width position of the circumferential groove and having a first groove wall width surface 12 extending in a tyre width direction and a second groove wall surface having an angle larger than the first groove wall width surface.

A groove bottom is formed symmetrically about a center line of a circumferential groove in a tread plan view and includes groove bottom protruding portions protruding radially outwardly from a groove bottom reference surface parallel to a tread surface at a deepest position of a groove depth. Groove bottom protruding portions have a first groove bottom surface extending radially and a second groove bottom surface having an angle larger than the first groove bottom surface. Groove walls include groove wall protruding portions protruding toward an inner side of the circumferential groove from a groove wall reference surface as a circumferential surface at a widest position of a groove width. The groove wall protruding portions each has a first groove wall width surface and a second groove wall surface having an angle larger than the first groove wall width surface.

A vehicle tire (1), including a tread (2) which intended for rolling contact with a foundation, the tread 82) being formed with a tread pattern (20) which includes circumferential grooves (25) and transverse grooves (26) for removing water from a contact patch between the foundation and the tire (1). The circumferential groove (25) has its wall (251) formed with a flow deflector (259) reducing a width of the circumferential groove (25), commencing from the wall (251) of the circumferential groove (25), bypassing a reduced-width portion (250) of the circumferential groove (25), and continuing arcuately into the transverse groove (26) so as to turn into a wall (261) of the transverse groove (26).

The tire includes a tread portion 2 having at least one groove 3 that includes two groove walls 6. At least one of the groove walls 6 has a protrusion 10 that protrudes from the groove wall 6. The protrusion 10 includes at least two ribs 11 that extend in a length direction of the groove 3 and are spaced from each other in the tire radial direction, and a joining portion 12 for joining the ribs 11 to each other. Each rib 11 protrudes from the groove wall 6 so as to form such an inclination that the rib 11 is inclined outward from the groove wall 6 in a tire radial direction.

A pneumatic tire includes a plurality of main grooves formed in a tread and extending along a tire circumferential direction, wherein the plurality of main grooves include a shoulder main groove located on an outermost side in a width direction, the shoulder main groove includes a raised portion formed by raising a first side, in the tire width direction, of a groove bottom of the shoulder main groove more than a second side of the groove bottom, and the raised portion is lower than an outer surface of the tread and continuously extends over an entire circumference in the tire circumferential direction.

A tire includes a tread portion including an outboard tread edge, an inboard tread edge, four circumferential grooves between the outboard and inboard tread edges, five land portions divided by the four circumferential grooves, and lateral grooves extending from the inboard tread edge to the crown land portion and terminating within the crown land portion. The four circumferential grooves include an inboard shoulder circumferential groove, an inboard crown circumferential groove, and an outboard crown circumferential groove. The five land portions include an inboard shoulder land portion, an inboard middle land portion, and a crown land portion between the inboard and outboard crown circumferential grooves. The crown land portion is provided with at least one crown sipe extending from the inboard crown circumferential groove or the outboard crown circumferential groove and terminating within the crown land portion, and crosses the axially center position of the crown land portion.