pneumatic tire

Abstract

To provide a pneumatic tire which is suitable as a tire for running on unpaved roads and has improved running performance on unpaved roads, wear resistance, and handling stability. In the tread portion (1), there are shoulder blocks (13s), intermediate blocks (13m) divided by multiple longitudinal grooves (11) extending along the tire ), the respective treads of the central block (13c) form shallow grooves (20) whose groove depth is smaller than that of the longitudinal grooves (11) and transverse grooves (12), so that the shallow grooves (20) extend along the tire width direction , and make at least one end communicate with the longitudinal groove (11) or the transverse groove (12), set at least one bending point (P) on the contour line of the shallow groove (20), and set it on the flat bottom surface of the shallow groove (20) The sipe (30) extending along the shallow groove (20) in which the central shallow groove (21) formed in the central block (13c) is provided with a terminal portion terminating in the central block (13c) (T).

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 improved running performance on unpaved roads while maintaining wear resistance and steering stability on paved roads. 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 The driving performance on unpaved roads has been improved (for example, refer to Patent Document 1). [0003] However, especially in the case of int...

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Problems solved by technology

[0003] However, especially in the case of intending to drive on rocky ground, the groove area is set to be large for the purpose of sufficiently biting into mud and the like (especially stones and rocks) to obtain traction, or to increase the edge components. The sipe is provided to improve the followability to the road surface. Therefore, there is a problem that the block rigidity is lowered, and it is difficult to ensure wear resistance and steering stability when driving on ordinary paved roads, and it is difficult to achieve a high degree of balance between these performances.

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