Abstract: The present invention is directed to a tread and a tire having a tread, wherein over most of a circumferential length i) a maximum axial width in a top portion of a tread groove is at least 5% smaller than an axial width of the tread groove in its bottom portion, ii) the axial width of the tread groove in the bottom portion is at least 5% smaller than the maximum axial width of the tread groove in a radial intermediate portion of the tread groove, and iii) a maximum axial width of the tread groove in the intermediate portion is within a range of 15% to 50% of the total radial height of the tread groove.

Abstract: A tire comprising a tire tread having a tread region comprising a first and second rib, wherein the first and second ribs are separated by a groove; at least one tie-bar element disposed within the groove, and the tie-bar block element having opposed sidewalls separated by a radially extending groove, wherein the radially extending groove tapers from a first width to a second width, wherein the second width is wider than the first width.

Abstract: A tread for a tire includes a first circumferential main groove, a second circumferential main groove, a third circumferential main groove, and a fourth circumferential main groove. The fourth main groove has a stabilizing structure for increasing tread stiffness. The stabilizing structure has a circumferentially extending wavy subgroove in a radially innermost bottom of the fourth circumferential main groove.

Abstract: A tread for a tire includes a first circumferential main groove, a second circumferential main groove, a third circumferential main groove, and a fourth circumferential main groove. The fourth main groove has a stabilizing structure for increasing tread stiffness. The stabilizing structure has a circumferentially extending wavy subgroove in a radially innermost bottom of the fourth circumferential main groove.