TIRE

To provide a tire improved in ride comfort performance during high-speed running.SOLUTION: A tire comprises a tread part. The tread part has a first layer constituting a tread surface and a second layer formed adjacently to inside in a tire radial direction of the first layer, where the first layer...

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1. Verfasser: TOKIMUNE RYUICHI
Format: Patent
Sprache:eng ; jpn
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Beschreibung
Zusammenfassung:To provide a tire improved in ride comfort performance during high-speed running.SOLUTION: A tire comprises a tread part. The tread part has a first layer constituting a tread surface and a second layer formed adjacently to inside in a tire radial direction of the first layer, where the first layer and the second layer respectively are constituted by rubber compositions containing rubber components and regenerative carbon blacks. When contents of the regenerative carbon blacks with respect to 100 parts by mass of rubber components of the rubber compositions constituting the first layer are defined as C (mass parts) and contents of the regenerative carbon blacks with respect to 100 parts by mass of rubber components of the rubber compositions constituting the second layer are defined as B (mass parts), B/C is over 1.0.SELECTED DRAWING: None 【課題】高速走行時の乗り心地性能を向上したタイヤを提供すること。【解決手段】トレッド部を備えたタイヤであって、トレッド部は、トレッド面を構成する第一層と、第一層のタイヤ半径方向内側に隣接する第二層を有し、第一層および第二層が、それぞれゴム成分および再生カーボンブラックを含有するゴム組成物により構成され、第一層を構成するゴム組成物のゴム成分100質量部に対する再生カーボンブラックの含有量をC(質量部)、第二層を構成するゴム組成物のゴム成分100質量部に対する再生カーボンブラック量をB(質量部)としたとき、B/Cが1.0超である、タイヤ。【選択図】なし