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Title:
TIRE
Document Type and Number:
Japanese Patent JP2013006440
Kind Code:
A
Abstract:

To provide a tire which combines excellent ride comfort with steering stability at high level.

The tire 1 has a rectangularity Ri of a tread part 11 located on one side which is 10 to 20% smaller than a rectangularity Ro of the tread part 11 located on the another side. That is, the tire satisfies a relation of 0.8Ro<Ri<0.9Ro. The rectangularity is represented by following formula: Rectangularity (%)=L/W×100, wherein W denotes a length of a ground-contact shape of the tire in a tread width direction, and L denotes a length of the ground-contact shape in a tire circumferential direction, the ground-contact shape being formed by the tire when the tire is in ground-contact with a road surface when a normal inner pressure and a normal load specified by JATMA are loaded on the tire. Here, measurement positions are positions (Pi, Po) of 80% outside in a tread width direction from a tire equator plane CL at a maximum width position, where a length is largest in the tread width direction crossing the tire equator plane CL.


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Inventors:
SAKURAI TARO
Application Number:
JP2011138476A
Publication Date:
January 10, 2013
Filing Date:
June 22, 2011
Export Citation:
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Assignee:
BRIDGESTONE CORP
International Classes:
B60C11/04; B60C3/06; B60C5/00; B60C9/18; B60C9/22; B60C9/30; B60C11/00; B60C13/00
Domestic Patent References:
JP2006188094A2006-07-20
JP2010247706A2010-11-04
JP2001233017A2001-08-28
JP2007083913A2007-04-05
JP2009001061A2009-01-08
JP2003170709A2003-06-17
JP2010215221A2010-09-30
Foreign References:
WO2010092987A12010-08-19
Attorney, Agent or Firm:
Hidekazu Miyoshi
Iwa Saki Kokuni
Masakazu Ito
Shunichi Takahashi
Toshio Takamatsu



 
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