A wet tire with high operational stability

Abstract

The invention provides a wet tyre with high operational stability, which is enhanced in driving performance, braking performance and turning performance on wet roads and icy roads while maintaining the basic wet tyre performance, has low probability of abrasion and is relatively long in service life. The wet tyre comprises a tread in which a plurality of circumferential main grooves extending in the circumferential direction of the tyre and a plurality of patterned grooves extending in the width direction of the tyre are formed, and the circumferential main grooves and the patterned grooves define a plurality of patterned blocks. The wet tyre is characterized in that the patterned blocks are ladder-like, contour lines of the patterned blocks at 20% and 40% of the depth of the circumferential main grooves are respectively named as a first contour line and a second contour line, the top surface areas of all the patterned blocks on the tread are named as the actual ground contact area of the tyre, and the ratio of the sectional areas of the patterned blocks below the first contour line to the area of the tread is S1, the ratio of the sectional areas of the patterned blocks below the second contour line to the area of the tread is S2, the ratio of the actual ground contact area to the area of the tread is S3, S1 / S2 is larger than or equal to 1.07 and smaller than or equal to 1.42, and S2 / S3 is larger than or equal to 1.09 and smaller than or equal to 1.56.

Description

technical field [0001] The invention relates to the technical field of pneumatic tires, in particular to a wet tire with high operational stability. Background technique [0002] Traditionally, for pneumatic tires, tread blocks are widely used, which are defined by circumferential main grooves and lug grooves, and edge effects are improved by opening sipes, thereby enhancing driving performance, braking performance and cornering on wet and icy roads performance, but the sipes will wear out under the use of the tire, and the normal service life of the tire is often not reached at this time, and the replacement cost is high. Contents of the invention [0003] The invention provides a wet tire with high operational stability. On the basis of maintaining the performance of the original wet tire, the operational performance of the tire is increased by optimizing tread pattern blocks. [0004] In order to solve the problems of the technologies described above, the present inven...

AI Technical Summary

Problems solved by technology

[0002] Traditionally, for pneumatic tires, tread blocks are widely used, which are defined by circumferential main grooves and lug grooves, and edge effects are improved by opening sipes, thereby enhancing driving performance, braking performance and cornering on wet and icy roads Performance, but the sipes will wear out under the use of tires. At this time, the normal service life of the tires is often not reached, and the replacement cost is high

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