To provide a tire in which wet performance degradation due to wear of a tread portion is small and wear of the tread portion can be checked at a glance.SOLUTION: Provided is a tire including a tread portion 2. The tread portion 2 includes a grounded surface 13, a first rubber layer 21, a second rubber layer 22, and a groove-like part 5. A loss tangent tanδ2 of a second cap rubber 22G is larger than a loss tangent tanδ1 of a first cap rubber 21G. The groove-like part 5 includes a first indicator 15 having a bottom part protruding locally. An outer surface 15o of the first indicator 15 in a tire radial direction substantially matches a first wear line 16 parallel with the grounded surface 13 and passing the outer surface of the second rubber layer 22 in the tire radial direction.SELECTED DRAWING: Figure 1

    【課題】トレッド部の摩耗に伴うウェット性能の低下が小さく、かつ、トレッド部の摩耗を一目でチェックできるタイヤを提供する。【解決手段】トレッド部2を有するタイヤである。トレッド部2は、接地面13と、第1ゴム層21と、第2ゴム層22と、溝状部5とを含む。第2キャップゴム22Gの損失正接tanδ2は、第1キャップゴム21Gの損失正接tanδ1よりも大きい。溝状部5は、底部が局部的に隆起した第1インジケータ15を含む。第1インジケータ15のタイヤ半径方向の外面15oは、接地面13と平行かつ第2ゴム層22のタイヤ半径方向の外面を通る第1摩耗ライン16に、実質的に一致している。【選択図】図1


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    Title :

    TIRE AND USE METHOD OF TIRE


    Additional title:

    タイヤ及びタイヤの使用方法


    Contributors:

    Publication date :

    2023-08-10


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60C VEHICLE TYRES , Fahrzeugreifen



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