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Abstract

The invention restrains uneven abrasion such as punching abrasion or heal and toe abrasion while exhibiting high performance on ice. A shoulder block Bo is provided with a vertical siping 5 in the circumferential direction of a tire, and a lateral siping in the axial direction of the tire, and the shoulder block Bo is divided into four sections: a first inner block piece Bli on one side in the circumferential direction of the tire and inside in the axial direction of the tire; a first outer block piece Blo on one side in the circumferential direction of the tire and outside in the axial direction of the tire; a second inner block piece B2i on the other side in the circumferential direction of the tire and inside in the axial direction of the tire; and a second outer block piece B2o on the other side in the circumferential direction of the tire and outside in the axial direction of the tire.

Description

technical field [0001] The invention relates to a truck tire, which is suitable for being used as a winter tire and can have ice performance and partial wear resistance. Background technique [0002] For example, in winter tires such as studless anti-skid tires for trucks, in order to ensure the driving performance on ice and snow roads, tires including shoulder block rows along the tread edge and adjacent middle block rows are often used. 5 to 6 rows of pattern blocks. In addition, since a larger load acts on the shoulder blocks when the tire rotates, in order to support this large load and exert good steering stability, the width of the aforementioned shoulder blocks is larger than that of other blocks to achieve a large size. In order to relatively improve the rigidity of the pattern block. [0003] However, there is a problem in that the difference in rigidity between the shoulder block and the middle block increases, and partial wear such as impact wear in which the m...

AI Technical Summary

Problems solved by technology

[0003] However, in this way, there is the following problem: the difference in rigidity between the shoulder block and the middle block will increase, and the impact wear and partial wear of the middle block will occur earlier than the shoulder block.

[0005] However, in this case, although it is effective for reducing impact wear, the circumferential rigidity of the shoulder blocks becomes too small, and tread shoulder wear occurs again on the blocks, so partial wear cannot be sufficiently suppressed.

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