Provided is a pneumatic radial tire in which run-flat durability can be improved while inhibiting vibration during tire rolling and tire protrusion during high-speed traveling. A pneumatic radial tire comprising a side reinforcing rubber layer 5 having a crescent shaped cross-section arranged on the inside of a carcass 4 at a side wall portion 2, and a belt reinforcing layer 9 which is formed by spirally winding a strip which is formed by covering a polyester cord with rubber with respect to the tire circumferential direction. The polyester cord taken out from pneumatic radial tire satisfies that the ply twist coefficient ±1 and the cable twist coefficient ±2 represented by the following formulae: ± ¢ 1 = N ¢ 1 × 0.125 × D ¢ 1 / Á 0.5 × 10 - 3 ± ¢ 2 = N ¢ 2 × 0.125 × D ¢ 2 / Á 0.5 × 10 - 3 are 0.1 to 0.4 and 0.1 to 0.45, respectively, and the initial tensile resistance degree is 7 to 20 GPa, and the adhesion level of the polyester cord in a residual adhesion evaluation method after an adhesive agent treatment is 5 N/cord or higher.


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    Titel :

    PNEUMATIC RADIAL TIRE


    Weitere Titelangaben:

    RADIALLUFTREIFEN
    PNEUMATIQUE RADIAL


    Beteiligte:
    YOSHIMI TAKUYA (Autor:in)

    Erscheinungsdatum :

    2019-04-03


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    B60C VEHICLE TYRES , Fahrzeugreifen / D02G CRIMPING OR CURLING FIBRES, FILAMENTS, YARNS, OR THREADS , Kräuseln oder Texturieren von Fasern, Fäden, Garnen oder Zwirnen



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