Title:
TIRE
Document Type and Number:
WIPO Patent Application WO/2023/042763
Kind Code:
A1
Abstract:
Provided is a small-diameter tire capable of simultaneously achieving wear resistance performance and noise performance. The tire 1 comprises: a pair of bead cores 11, 11; a carcass layer 13 bridging between the bead cores 11, 11; a belt layer 14 disposed radially outside the carcass layer 13; and a tread portion. Moreover, the tire outer diameter OD [mm] is in a range of 200≤OD≤660 and the tire total width SW [mm] is in a range of 100≤SW≤400. A groove area ratio Aa [%] of the tread portion is in a range of 0.008≤Aa/OD≤0.150, and provided that a tire inner area of the tread portion is defined as an area of 48×(OD/SW)^(1/5) [%] from the end of the maximum ground contact width on the inner side of the tire at the time when the tire is mounted to a vehicle, a relationship between a groove area ratio Ai [%] of the tire inner area and a groove area ratio Ao [%] of a tire outer area, which is an area other than the tire inner area, is Ai>Ao.
Inventors:
TATENO HARUKA (JP)
KODA HIRAKU (JP)
FUJISHIRO MASAYUKI (JP)
KODA HIRAKU (JP)
FUJISHIRO MASAYUKI (JP)
Application Number:
PCT/JP2022/033917
Publication Date:
March 23, 2023
Filing Date:
September 09, 2022
Export Citation:
Assignee:
YOKOHAMA RUBBER CO LTD (JP)
International Classes:
B60C11/00; B60C3/04; B60C5/00; B60C11/03; B60C11/13
Domestic Patent References:
| WO2009099108A1 | 2009-08-13 |
Foreign References:
| JP2018138435A | 2018-09-06 | |||
| JP2018138434A | 2018-09-06 | |||
| JP2016041583A | 2016-03-31 | |||
| JP2014162340A | 2014-09-08 | |||
| JP2015189440A | 2015-11-02 |
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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