tire

The tire design addresses the trade-off between drainage and motion performance by optimizing groove and land ratios in an asymmetric tread pattern, ensuring improved handling and drainage in both straight-line driving and turning.

JP2026092832AActive Publication Date: 2026-06-08TOYO TIRE CORP
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
TOYO TIRE CORP
Filing Date
2024-11-27
Publication Date
2026-06-08

AI Technical Summary

Technical Problem

Existing tire designs face a trade-off between improving drainage performance and motion performance during straight driving and turning, as increasing the groove area enhances drainage but reduces motion performance, and vice versa.

Method used

A tire design with a specified mounting direction and asymmetric tread pattern, where the inner region has a higher ratio of main groove widths to land widths and fewer void areas compared to the outer region, ensuring better drainage and rigidity for straight driving, while the outer region has larger land areas and more voids for improved handling during turning.

Benefits of technology

The tire achieves enhanced handling performance during both straight-line driving and turning by optimizing groove and land ratios, promoting drainage and suppressing land deformation, thereby balancing drainage and motion performance.

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  • Figure 2026092832000001_ABST
    Figure 2026092832000001_ABST
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Abstract

To provide a tire that improves handling performance during straight-line driving and cornering while ensuring drainage performance. [Solution] The tire has a specified mounting direction relative to the vehicle and includes a tread portion 3 that includes a main groove 10 extending continuously along the circumferential direction of the tire and a land portion 20 partitioned by the main groove 10. The ratio of the sum of the widths of the main groove 10, WGi (WGi / WLi), to the sum of the widths of the land portion 20, WLi, in the inner region IN is greater than the ratio of the sum of the widths of the main groove 10, WGo (WGo / WLo), to the sum of the widths of the land portion 20, WLo, in the outer region OUT, and the ratio of the sum of the void areas, AVi (AVi / ASi), to the sum of the see-through void areas, ASi, in the inner region IN is smaller than the ratio of the sum of the void areas, ABo (AVo / ASo), to the sum of the see-through void areas, ASo, in the outer region OUT.
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