Reifen

Details

Veröffentlichungs-Nr.

EP4385756

Aktenzeichen

EP23216326

Anmeldetag

13. Dezember 2023

Veröffentlichung

26. März 2025

Erteilung

26. März 2025

Rechtsraum

EP

IPC

B60C1/00B60C9/00B60C9/20

Abstract

Provided is a tire with excellent handling stability during high-speed driving. A tire includes a belt layer (16) and a tread portion (4), the belt layer including at least one belt ply (38, 40) including a steel monofilament and a coating rubber, the belt layer having a ratio of E2/E1 of less than 0.90, wherein, when viewed in a radial cross-section of the tire, E1 denotes the number (ends/50 mm) of steel monofilaments aligned per 50 mm in the tire width direction in a region of the belt ply having the largest width in the tire axial direction which extends from the tire equator to a point Q that is located at 80% of a distance L in the tire axial direction from the tire equator to a point P that is located at an outer edge, with respect to the tire width direction, of the belt ply having the largest width in the tire axial direction; and E2 denotes the number (ends/50 mm) of steel monofilaments aligned per 50 mm in the tire width direction in a region of the belt ply having the largest width in the tire axial direction which extends from the point Q to the point P, the tread portion having a loss tangent, tanδt, of 0.25 or less as measured at a temperature of 30°C, an initial strain of 10%, a dynamic strain of ± 1%, and a frequency of 10 Hz in extension mode.

Anmelder

Firma

Sumitomo Rubber Industries, Ltd.

Land

🇯🇵 Japan

Fachgebiete