Pneumatic tire

Abstract

Provided is a pneumatic tire that is advantageous as an off-road tire, the tire having improved driving performance, wear resistance, and cut resistance on off-road surfaces. The pneumatic tire comprises a block pattern having a point-symmetrical structure. Narrow-width outer blocks (21a) and wide-width outer blocks (21b), outer ends of which have different positions with respect to the tire widthwise direction, are alternately disposed around the tire circumferential direction. From among side blocks (23) provided in a side region, large blocks (23a) having large projection areas are disposedto the outside of the narrow-width outer blocks (21a) with respect to the tire widthwise direction, and small blocks (23b) having small projection areas are disposed to the outside of the wide-widthoutside blocks (21b) with respect to the tire widthwise direction. Lateral grooves (12) and side grooves (13) are connected, with the widths of the side grooves (13) communicating with wide-width sections (12a), constituted by the lateral grooves (12) having wide widths at the positions of the outer blocks (21), decreasing inward in the tire radial direction, and the widths of side parts communicating with narrow-width sections (12b), constituted by the lateral grooves (12) having narrow widths at the positions of the outer blocks (21), increasing inward in the tire radial direction, yieldinga tapered shape such that the side blocks (23) decrease in block width toward the wide-width sections (12a) as distance inward in the tire radial direction increases.

Description

technical field [0001] The present invention relates to a pneumatic tire suitable as a tire for running on unpaved roads, and more specifically, to a pneumatic tire having both wear resistance on paved roads, running performance on unpaved roads, and cut resistance. Background technique [0002] In the pneumatic tires used for driving on uneven ground, muddy ground, snow track, sandy ground, rocky ground and other unpaved roads, horizontal grooves (Japanese: rag grooves) and blocks with many edge components are generally used. Large tread pattern. In such tires, the traction performance is obtained by biting into mud, snow, sand, stones, rocks, etc. on the road surface (hereinafter, they are collectively referred to as "mud, etc."), and prevents mud, etc. from clogging in the grooves, thereby improving driving performance on unpaved roads. Especially in tires intended to run on rocky ground, blocks are provided on the sidewall area on the outer side of the tire width direc...

AI Technical Summary

Problems solved by technology

[0003] However, in such tires, blocks are formed in the shoulder area and the sidewall area, but on the other hand, since the groove area is also increased in these areas, stones, rocks, and foreign objects on the road surface are easy to enter. Installed in the grooves in the shoulder area and sidewall area, the bottom of the groove is easily damaged (poor cut resistance)

In addition, since the tread surface (Japanese: トレッド surface) has a large groove area, there is a tendency that the wear resistance also tends to decrease.

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