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Title:
PNEUMATIC TIRE
Document Type and Number:
WIPO Patent Application WO/2020/129549
Kind Code:
A1
Abstract:
In order to provide both steering stability on dry and wet road surfaces and noise performance, this pneumatic tire 10 has: a first main groove 11 that extends in the tire circumferential direction at a position on the outside of the tire equatorial plane CL in the vehicle width direction; a second main groove 12 that extends in the tire circumferential direction at a position closer to the tire equatorial plane CL than the first main groove 11; a third main groove 13 that extends in the tire circumferential direction at a position on the inside of the tire equatorial plane CL in the vehicle width direction; a fourth main groove 14 that extends in the tire circumferential direction at a position further away from the tire equatorial plane CL than the third main groove 13; a first narrow groove 15 that extends in the tire circumferential direction between the third main groove 13 and the fourth main groove 14 ; and a first groove section 30 that extends in the tire width direction between the first narrow groove 15 and the fourth main groove 14 and has one end thereof opening to the fourth main groove 14. The groove width G1 of the first main groove, the groove width G3 of the third main groove, and the groove width G4 of the fourth main groove fulfill the relationships 1.05 ≤ G1/G3 ≤ 1.25, 1.10 ≤G4/G3 ≤ 1.30, and G3 < G1 < G4.

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Inventors:
NAGAHASHI YUKI (JP)
Application Number:
PCT/JP2019/046143
Publication Date:
June 25, 2020
Filing Date:
November 26, 2019
Export Citation:
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Assignee:
YOKOHAMA RUBBER CO LTD (JP)
International Classes:
B60C5/00; B60C11/03; B60C11/12
Domestic Patent References:
WO2018235400A12018-12-27
Foreign References:
JP2017132317A2017-08-03
JP2017159752A2017-09-14
JP2018012372A2018-01-25
JP2012218650A2012-11-12
US6142200A2000-11-07
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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