A tire with improved performance in terms of grip on wet ground even when it is close to the legal wear limit. The tread comprises three layers of materials (M1, M2, M3), radially superposed: the layer (M1) is laid radially on the outside of the crown reinforcement. The layer (M2) is laid radially on the outside of the layer (M1), and the last layer (M3) intended to be in contact with the ground is laid radially on the outside of the layer (M2). The moduli of shear stiffness, G′M1), G′(M2), G′(M3), and the viscoelastic losses Tgδ(M1), Tgδ(M2), Tgδ (M3) of the materials of the layers satisfy the following relationships:G′(M1)/G′(M2) is within the range [7; 25];Tgδ (M2) and Tgδ (M3) are linked by the following relationship: (Tgδ (M2)−Tgδ (M3))/Tgδ (M2)≥30%Thickness of layer (M3)/Thickness of layer (M2) is within the range [3; 10].


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    Title :

    PNEUMATIQUE COMPORTANT UNE BANDE DE ROULEMENT OPTIMISÉE EN ADHÉRENCE SUR SOL MOUILLÉ A L'ÉTAT USÉ


    Additional title:

    TYRE COMPRISING A TREAD OPTIMISED FOR GRIP ON WET GROUND IN THE WORN CONDITION
    REIFEN MIT EINER LAUFFLÄCHE, DIE FÜR DIE GRIFFIGKEIT AUF NASSBODEN IM ABGENUTZEN ZUSTAND OPTIMIERT IST


    Contributors:

    Publication date :

    2025-02-19


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    French


    Classification :

    IPC:    B60C VEHICLE TYRES , Fahrzeugreifen





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