TIRE TREAD RUBBER COMPOSITION AND TIRE USING THE SAME

    公开(公告)号:EP4397506A1

    公开(公告)日:2024-07-10

    申请号:EP23219618.8

    申请日:2023-12-22

    发明人: KUBO, Haruka

    IPC分类号: B60C1/00 C08L9/06 C08L15/00

    CPC分类号: B60C1/0016 C08L9/06 C08L15/00

    摘要: In order to improve steering stability at the time of turning while ensuring good fuel efficiency, there is provided a tire tread rubber composition including a rubber component containing styrene-butadiene-based rubber and isoprene-based rubber, wherein the hardness Hs at 23 °C is 55 or greater and 62 or less, and the hardness Hs at 23 °C and the loss tangent tan δ at 35 °C satisfy the following formula: 0.240 ≤ tan δ/Hs × 100 ≤ 0.320. There is also provided a tire having a tread composed of this tire tread rubber composition.