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Title:
PNEUMATIC TIRE
Document Type and Number:
Japanese Patent JP2012076593
Kind Code:
A
Abstract:

To provide a pneumatic tire capable of simultaneously having pattern noise performance, while maintaining at least maneuvering stable performance and hydroplaning performance.

A tread part of the pneumatic tire has a circumferential directional main groove on both sides with a center line as the center. The pitch number of a first side tread part with the center line of the tread part as the center, is the number of 1.2-1.6 times of the pitch number of a second side tread part on the opposite side of the first side. First side rubber hardness of the tread part is higher than second side rubber hardness at 20°C. Out of the circumferential directional main grooves, a groove width of a first circumferential directional main groove positioned on the first side, is 70-95% of a groove width of a second circumferential directional main groove positioned on the second side.


Inventors:
IIDA TOSHIHIRO
Application Number:
JP2010223628A
Publication Date:
April 19, 2012
Filing Date:
October 01, 2010
Export Citation:
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Assignee:
YOKOHAMA RUBBER CO LTD
International Classes:
B60C11/04; B60C5/00; B60C11/00; B60C11/03
Domestic Patent References:
JPS6467404A1989-03-14
JPH0958219A1997-03-04
JP2005053311A2005-03-03
JP2005170147A2005-06-30
JP2007196964A2007-08-09
JP2010058781A2010-03-18
JP2003170705A2003-06-17
JP2008132810A2008-06-12
JPS6467404A1989-03-14
JPH0958219A1997-03-04
JP2005053311A2005-03-03
JP2005170147A2005-06-30
JP2007196964A2007-08-09
JP2010058781A2010-03-18
Foreign References:
WO2007145177A12007-12-21
US20070017617A12007-01-25
US20090090444A12009-04-09
WO2007145177A12007-12-21
US20070017617A12007-01-25
US20090090444A12009-04-09
Attorney, Agent or Firm:
Global IP Tokyo Patent Business Corporation