To provide a pneumatic tire of which on-ice friction is high and on-ice performance enhances even though traveling on an ice road surface of which the ice is easy to thaw.SOLUTION: In the pneumatic tire, a tread part includes a land part touching a road surface. A surface of the land part touching the road surface includes a surface quality identical to a part of region of surface of a rubber piece. A region of one part of the surface of the rubber piece is a region selected from among of contact surfaces of the rubber piece observed over a flat plate by pressing the rubber piece at surface pressure of 200 kPa to a transparent flat plate. In one part of the region, a ratio Y/X of an area Y of the region of the rubber piece coming into contact with the flat plate relative to an area X of an apparent contact region of the rubber piece satisfies 0.2-0.5.SELECTED DRAWING: Figure 4

    【課題】氷が溶けやすい氷上路面を走行する場合であっても、氷上摩擦が高く、氷上性能が向上する空気入りタイヤを提供する。【解決手段】本実施形態の空気入りタイヤは、前記トレッド部は、路面と接する陸部を有している。前記路面と接する前記陸部の表面は、下記のゴム片の表面の一部の領域と同じ表面性状を有している。ゴム片の表面の一部の領域は、透明な平板に200kPaの面圧で当該ゴム片を押し付けて前記平板越しに観察した前記ゴム片の接触面の中から選択した領域である。前記一部の領域において、前記ゴム片の見かけ上の接触領域の面積Xに対する、前記平板と接触する前記ゴム片の領域の面積Yの比Y/Xは0.2〜0.5を満たす。【選択図】図4


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    Title :

    PNEUMATIC TIRE


    Additional title:

    空気入りタイヤ


    Contributors:

    Publication date :

    2020-04-02


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60C VEHICLE TYRES , Fahrzeugreifen



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