Tire with improved grip on wet and / or snow surfaces

By optimizing the pad design of studded tires, the grip on wet and snowy surfaces is enhanced while maintaining grip on ice, thus solving the problem of insufficient grip on wet and snowy surfaces of existing studded tires.

CN122029059APending Publication Date: 2026-05-12MICHELIN & CO (CIE GEN DES ESTAB MICHELIN)
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Patent Information

Application Number
CN202480064839.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2023-10-09
Filing Date
2024-10-01
Publication Date
2026-05-12

AI Technical Summary

Technical Problem

Existing studded tires have insufficient grip on wet and snowy surfaces, and improving grip on wet surfaces may compromise grip on ice.

Method used

By optimizing the design of the studded tire pads, reducing the pad size and increasing the size and number of cuts, the porosity is improved, enhancing contact with the snow layer. At the same time, by increasing the amount of material in the solid anchoring area, the studs are firmly fixed, preventing a decrease in grip performance on ice.

Benefits of technology

Without compromising grip performance on ice, it significantly improves tire grip on wet and snow surfaces, enhances drainage on wet surfaces and snow-breaking effect on snow surfaces.

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Abstract

The invention relates to a stud tire comprising a tread comprising a stud pad (36c) comprising a receptacle (42) for receiving a stud (44), the maximum total diameter of the upper portion (51) of the stud extending over two thirds of the total height (H) of the stud being Dc. Each receptacle (42) is surrounded by a solid anchoring region (54) of a nail (44), said solid anchoring region (54) having a maximum total diameter Dmax. For each receptacle (42), each staple pad (36c) has a dimension Lmin that separates two opposing edges of the staple pad (36c) and a minimum distance through the center of the staple pin (48). The average value M of the Dmax / Lmin ratios of all the accommodating parts (42) and the nailing cushion blocks (36c) satisfies M < = 73%. The average value M'of the Dc / Dmax ratios of all the nails (44) and the accommodating parts (42) satisfies M '> = 37%.
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