Abstract: A tread for a heavy vehicle tire of total thickness PMU this tread when new having a tread surface is provided and disclosed herein. The tread includes at least one cut opening in the initial condition onto the tread surface, this cut being such that it includes an external part having the form of a groove in the main direction, this groove having a mean depth Pe less than 80% of the thickness PMU, an internal part forming the bottom of the cut, this internal part having the shape of a channel of mean width Le and mean height He, this channel being intended to form a new continuous groove when the part wear of the tread reaches at most 80% of the thickness PMU.

Abstract: A tread for a heavy vehicle tire which, when new, has a tread surface, this tread including over at least a first axial part (M) of the tread at least one wavy groove with waviness in the thickness of the tread and continuous in a first direction and a plurality of wavy grooves with waviness in the thickness of the tread and continuous in a second direction, the wavy grooves in the second direction being connected to at least one wavy groove in the first direction, and over at least a second axial part (B) of the tread at least one wavy groove with waviness in the thickness of the tread and continuous in a third direction and a plurality of wavy grooves with waviness in the thickness of the tread and continuous in a fourth direction, the wavy grooves of this second axial tread part (B) oriented in the fourth direction being connected to at least one wavy groove in the third direction, this tread being such that, when new, the open parts opening onto the tread surface of the first axial part (M) are connected