Pneumatic tire

Abstract

The invention provides a pneumatic tire, which has directional patterns and achieves improved wet performance, snow performance and nonuniform wear resistance. The central portion (C) of the pneumatic tire is divided into multiple pattern blocks (5) via a central main groove (1), outer main grooves (2) and transverse grooves (3). Meanwhile, the strip-shaped patterns (5) at the tire shoulder portion (S) is provided with shoulder pattern grooves (4). The patterns of the pneumatic tire are directional patterns. The transverse grooves (3) are formed at two sides of the central main groove (1) in the tire width direction and is reversely inclined relative to the tire equator, wherein the central inclined angle Theta1 of the transverse grooves (3) is an acute angle. Meanwhile, the transverse grooves (3) are formed at two sides of the central main groove (1) in the tire width direction and the tire circumferential direction in a staggered manner such that the circumferential portion (3') formed by upward projection of the transverse grooves (3) in the tire circumferential direction is provided at the periphery of the tire. In addition, sipes (7) are provided at the pattern blocks (5) and the strip-shaped patterns (6).

Description

technical field [0001] The present invention relates to a pneumatic tire, and more particularly, to a pneumatic tire capable of improving wet performance and snow performance and improving uneven wear resistance. Background technique [0002] As is known to all, dividing a tire into multiple blocks by means of a plurality of main grooves extending along the tire circumferential direction and a plurality of transverse grooves extending along the tire width direction can have excellent snow performance and drainage performance. In this type of pneumatic tire, a directional tread pattern is used on the tread for higher drainage performance. For example, Patent Document 1 proposes to form a tread pattern as a directional pattern provided with a plurality of main grooves extending in the circumferential direction and a plurality of shoulder grooves and sipes extending obliquely in the tire width direction. [0003] On the other hand, the wear characteristics of tires vary depend...

AI Technical Summary

Problems solved by technology

However, if the tire has a directional tread pattern that specifies the direction of rotation of the tire, since the direction of rotation of the tire is fixed, the rotation can only be performed between the front and rear wheels mounted on the same side on both sides of the vehicle

Therefore, for tires such as light truck tires that bear a large load on the shoulders during rotation, when the above-mentioned directional tread pattern is used, the tires can only be rotated between the front and rear wheels on the same side, and it is impossible to prevent the tire from rotating. Uneven wear on the tire shoulders

In addition, in order to suppress uneven wear, it is effective to reduce lateral grooves and increase block rigidity, but at this time, snow performance may be reduced

Therefore, it is difficult to balance wet performance, snow performance and uneven wear resistance

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