Tyre
AssigneeSumitomo Rubber Industries, Ltd.
InventorTatsuya KOBAYASHI
Life of this patent
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Abstract
A tyre comprises a tread portion comprising a shoulder main groove and a shoulder land region. The shoulder land region includes an outer region, a middle region, and an inner region. The shoulder land region is provided with a plurality of shoulder sipes having components in a tyre axial direction. A sipe ratio of the middle region is smaller than the sipe ratio of the outer region and the sipe ratio of the inner region.
Claims20
A tyre comprising a tread portion comprising a shoulder main groove extending continuously in a tyre circumferential direction on a side closest to a tread edge and a shoulder land region formed on an outer side in a tyre axial direction of the shoulder main groove, wherein
- the shoulder land region includes an outer region which is a region of 10% of a tread width axially outward from the tread edge, a middle region which is a region of 10% of the tread width axially inward from the tread edge, and an inner region between the middle region and the shoulder main groove,
- the shoulder land region is provided with a plurality of shoulder sipes having components in the tyre axial direction, and
- in each of the outer region, the middle region, and the inner region, when a ratio of a total opening area of the shoulder sipes included in the respective region to a total area of a ground contacting surface of the respective region is defined as a sipe ratio, the sipe ratio of the middle region is smaller than the sipe ratio of the outer region and the sipe ratio of the inner region.
Dependencies are inferred from the claim text.