Inflation tire

Abstract

The invention discloses an inflation tire, which can be used to maintain the sideslipping performance, the performance on wet road surfaces of the vehicle, and to improve the heal-and-toe wear resistance performance of the vehicle. The inflation tire (1) is provided with a plurality of grooves(3) of a pair of tire shoulder main grooves(4). A land part width (Ls) of a tire shoulder land part(6) is 10 to 15% of a tire surface grounding width (TW). The tire shoulder land part (6) is provided with a first tire shoulder horizontal groove (15), which extends from the part close to the tire surface grounding end (Te),and is inclined at an angle of 10 to 35 degrees relative to the tire shaft; a second tire shoulder horizontal groove (16), which is inclined from the part between the first tire shoulder horizontal grooves (15, 15) at an angle of 10 to 35 degrees towards the axial direction of the tire, and can form a terminal on the tire shaft more close to the inner side than the first tire shoulder horizontal groove(15); a third tire shoulder horizontal groove (17), which is inclined from the outer side of the tire surface grounding end (Te) of the tire shaft towards the inner side of the tire shaft, and can form a terminal close to the tire surface grounding end(Te).

Description

technical field [0001] The present invention relates to a pneumatic tire that maintains the sideslip performance, wet road performance, etc. of a vehicle and improves heel-toe wear resistance. Background technique [0002] In the past, a plurality of blocks were formed on the tread portion, but in recent years blocks have been required to improve heel-toe wear resistance. In order to improve heel-toe wear resistance, it is known to enlarge the pattern by reducing the depth, groove width and / or number of arrangement of the lateral grooves that divide the blocks, especially the shoulder lateral grooves provided on the tread contact end side. A method such as pattern rigidity of the block. [0003] However, the above method has a problem of deterioration of wet performance due to reduction of groove volume and edge components. In addition, in order to prevent the vehicle from skidding on the main road surface (such as a sloped road surface for drainage), it is necessary to en...

AI Technical Summary

Problems solved by technology

[0003] However, the above-mentioned method has a problem of deterioration of wet performance due to reduction of groove volume or edge components.

In addition, in order to prevent the vehicle from skidding on the main road surface (such as a sloped road surface for drainage), it is necessary to ensure a large residual lateral resistance force (hereinafter, sometimes simply referred to as "residual CF"), but the above method has residual CF. easily reduced problem

In this way, there is a contradictory relationship between improving heel-toe wear resistance and ensuring wet performance and sideslip performance, and it is difficult to make them coexist

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