To provide a heavy load tire in which wet grip performance is improved.SOLUTION: A heavy load tire includes a tread part. The tread part includes one or more circumferential main grooves continuously extending in a tire circumferential direction and consists of rubber composition containing rubber constituent and silica. When a groove depth of the deepest part of the circumferential main groove is H1 (mm), and the content of the silica relative to the rubber constituent 100 pts.mass of the rubber composition is D (pts.mass), H1 is 15.0 or less and H1×D is 250 or more. When the tread part is abrased along a tread radius so that the groove depth of the deepest part of the circumferential main groove becomes 75% thereof when it is new, a land ratio R at a contact area of the tread part is 0.90 or more.SELECTED DRAWING: None

    【課題】ウェットグリップ性能が向上した重荷重用タイヤを提供すること。【解決手段】トレッド部を有する重荷重用タイヤであって、トレッド部は、タイヤ周方向に連続して延びる1本以上の周方向主溝を有し、トレッド部はゴム成分およびシリカを含むゴム組成物により構成され、周方向主溝の最深部の溝深さをH1(mm)、ゴム組成物のゴム成分100質量部に対するシリカの含有量をD(質量部)としたとき、H1が15.0以下であり、H1×Dが250以上であって、周方向主溝の最深部の溝深さが新品時の75%となるようにトレッドラジアスに沿ってトレッド部を摩耗させた後の、トレッド部の接地面におけるランド比Rが0.90以上である、重荷重用タイヤ。【選択図】なし


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    Title :

    HEAVY LOAD TIRE


    Additional title:

    重荷重用タイヤ


    Contributors:

    Publication date :

    2025-03-26


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60C VEHICLE TYRES , Fahrzeugreifen / C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS



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