Pneumatic tire

Abstract

Provided is a pneumatic tire having improved noise performance and improved traveling performance on an unpaved road. The tread section 1 of the pneumatic tire has shoulder land sections 12 and a center land section 12, the shoulder and center land sections being defined on both sides of a tire equator CL by a pair of main grooves 10 extending in a zigzag pattern in a tire circumferential direction. The shoulder land sections 11 have formed therein shoulder lug grooves 20 extending in a tire width direction. The center land section 12 has formed therein: first center lug grooves 31 which continuously extend from the shoulder lug grooves 20 across the main grooves 10, are tilted relative to the tire width direction at an angle in the range of 45 degrees to 70 degrees, inclusive, and reach and terminate at the tire equator CL; and second center lug grooves 32 which terminate without reaching the tire equator CL. The first center lug grooves 31 and the second center lug grooves 32 are alternately arranged in the tire circumferential direction. The center land section 12 has formed therein connection grooves 40 tilted in the direction opposite the direction in which the center lug grooves 30 are tilted, and the connection grooves 40 connect the center lug grooves 30 with each other.

Description

technical field [0001] The present invention relates to a pneumatic tire suitable as a tire for running on unpaved roads, and more particularly, to a pneumatic tire having improved noise performance and running performance on unpaved roads. Background technique [0002] Pneumatic tires intended to run on unpaved roads such as uneven ground, muddy ground, snowy roads, sandy ground, rocky ground, etc., generally adopt a tread pattern mainly composed of horizontal grooves and blocks with many edge components and having a large groove area. In such tires, mud, snow, sand, stones, rocks, etc. (hereinafter, collectively referred to as "mud, etc.") on the road surface are bitten to obtain traction performance, and mud, etc. Running performance on unpaved roads (for example, refer to Patent Documents 1 and 2). [0003] Comparing the tires of Patent Documents 1 and 2, it can be said that the tire of Patent Document 1 has a relatively small groove area and is of the type that takes r...

AI Technical Summary

Problems solved by technology

In addition, as described above, since tires for running on unpaved roads basically have blocks as the main body and have a large groove area, there is a tendency that the noise performance (such as pattern noise) tends to be lowered, so that the noise performance is also required to be maintained or improved.

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