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 to one another to form a continuous surface network and in that the open parts opening onto the tread surface of the second axial part (B) are disjointed from one another, and beyond a part-wear condition, the open parts opening onto a new tread surface of the second axial part (B) are connected to one another to form a continuous surface network and in that the open parts opening onto the new tread surface of the first axial part (M) are disjointed from one another.


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    Title :

    EVOLVING TREAD FOR A TIRE


    Contributors:

    Publication date :

    2016-10-13


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B60C VEHICLE TYRES , Fahrzeugreifen



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