Radialreifenauffläche für Lastkraftwagen.

摘要

Radial tyre tread for heavy goods vehicle comprising at least one groove in a broken circumferential line (1) and grooves in wide broken transverse lines (2) defining blocks, the wide transverse grooves (2) possessing walls whose inclination is constant and symmetrical over a mid zone (6) extending either side of the mid plane to a width of between 40 % and 75 % of the tread width and beyond said mid zone and as far as the edges possess walls whose inclination is variable and asymmetrical and two narrow circumferential lateral grooves (5) situated at a distance from the edges not exceeding one third of the tread width and possessing a depth of between 10 % and 70 % of the depth of the transverse grooves.