Pneumatic tire

Abstract

Provided is a pneumatic tire capable of improving uneven-wear resistance and driving performance on muddy road surfaces, and achieving both these properties in a balanced manner. A plurality of firstlug grooves (11) and a plurality of second lug grooves (12) shorter than the first lug grooves (11) are provided alternately along the tire circumferential direction in a shoulder region of a tread part (1). A first connection groove (21) that connects the second lug groove (12) and a tip end part of the first lug groove (11) is provided, and a second connection groove (22) that connects the firstlug groove (11) and a tip end part of the second lug groove (12) is provided. An angle THETA 1 of the first connection groove (21) is greater than an angle THETA 2 of the second connection groove (22). A tire-widthwise inner end part of each of a plurality of first shoulder blocks (31) each partitioned by the first lug groove (11), the second lug groove (12), and the first connection groove (21)is arranged closer to the tire equator CL than a tire-widthwise inner end part of each of a plurality of second shoulder blocks (32) each partitioned by the first lug groove (11), the second lug groove (12), and the second connection groove (22). Each of the first and second shoulder blocks (31, 32) is provided with a traversal groove (31a, 32a) that traverses the block while being slanted with respect to the tire circumferential direction.

Description

technical field [0001] The present invention relates to a pneumatic tire, and more specifically, to a pneumatic tire capable of improving uneven wear resistance and running performance on a muddy road surface, and taking these performances into consideration in a well-balanced manner. Background technique [0002] In the pneumatic tires used for driving on muddy ground, snowy road, sandy ground, etc. (hereinafter, they are collectively referred to as "muddy ground, etc."), horizontal grooves (Japanese: rag groove) and / or Or a tread pattern with a block as the main body and a large groove area. In such tires, mud, snow, sand, etc. (hereinafter, they are collectively referred to as "mud, etc.") on the road surface are bitten to obtain traction performance, and mud, etc. are prevented from clogging in grooves (improved discharge performance of mud, etc.) , thereby improving running performance (mud performance) on muddy ground or the like (for example, refer to Patent Document...

AI Technical Summary

Problems solved by technology

[0003] However, in a tread pattern mainly composed of such blocks, uneven wear tends to easily occur.

In particular, if the groove area is enlarged to improve mud performance, the rigidity of the block will decrease, so there is a problem that the partial wear resistance is reduced, and it is difficult to balance the mud performance and partial wear resistance.

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