Studless tyre including a tread portion with sipes, wherein in a cross-sectional view of the tyre perpendicular to a circumferential direction, a profile of a tread face between an equatorial plane and each of tread edges is formed by three arcs convex radially outwardly which are counted an i-th from the equatorial plane in an axially outward direction and having a radius Ri, and the tangent line of the arc C1 on the equatorial plane extends exactly in the axial direction; an arc C(i+1) and the arc Ci makes contact at a point where they intersect; the radius R(i+1) is not greater than the radius (Ri); the ratio of R2 to R1 in the range of 0.40 - 0.70 is 40% and the ratio R3 to R1 is in the range of 0.15 - 0.30.


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    Title :

    STUDLESS TYRE


    Additional title:

    REIFEN OHNE SPIKE
    PNEUMATIQUE SANS CRAMPONS


    Contributors:

    Publication date :

    2020-12-16


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B60C VEHICLE TYRES , Fahrzeugreifen



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