Reifen

Details

Veröffentlichungs-Nr.

EP4134248

Aktenzeichen

EP22187248

Anmeldetag

27. Juli 2022

Veröffentlichung

15. Februar 2023

Rechtsraum

EP

IPC

B60C11/00B60C11/03

Abstract

An object of the present disclosure is to provide a tire having improved total performance of steering stability during high-speed running and noise performance. Provided is a tire comprising a tread part, the tread part comprising at least a first rubber layer forming a tread surface and a second rubber layer adjacent to an inner side of the first rubber layer in a tire radial direction, wherein the tread part comprises two or more circumferential grooves extending continuously in a tire circumferential direction, a pair of shoulder land parts partitioned by the circumferential grooves and grounding ends, and a center land part located between the pair of the shoulder land parts, wherein the first rubber layer and the second rubber layer are formed of a rubber composition comprising a rubber component, wherein a ratio of a distance H<2> (mm) from an outermost surface of the tread part to an outermost part of the second rubber layer to a groove depth H<1> of deepest parts of the circumferential grooves (H<2>/H<1>) is 0.40 to 0.90, and wherein, when a complex elastic modulus at 30°C of the first rubber layer is defined as E*<T> (MPa) and a complex elastic modulus at 30°C of the second rubber layer is defined as E*<B> (MPa), E*<B> is greater than E*<T>, and a ratio of E*<T> to H<2>/H<1> (E*<T>/(H<2>/H<1>)) is 6.0 or more.

Anmelder

Firma

Sumitomo Rubber Industries, Ltd.

Land

🇯🇵 Japan

Fachgebiete