TYRE TREAD THAT REDUCES THE ROLLING NOISE

摘要

The invention relates to a tyre tread comprising a tread profile formed by numerous relief patterns (1, 2) defined by grooves (3) which are oriented in the transversal and longitudinal directions of the tread. Each of said relief patterns comprises one contact face (10, 20) and lateral faces (11, 21). Multiple relief patterns are connected in pairs by at least two rubber connecting elements (4, 5) moulded during the moulding of the tread. Said connecting elements and the walls opposite the relief patterns to which they are linked define a cavity (6) that closes on contact with the roadway in order to trap and compress a volume of air as soon as the wear of the tread reaches an appropriate wear level. Said tread is characterised in that for each cavity (6) formed in this way at least one rubber element defining said cavity comprises at least one opening (41, 51) that passes through said rubber element completely in order to communicate the volume of said cavity with a groove.