Title:
乗用車用空気入りラジアルタイヤ
Document Type and Number:
Japanese Patent JP6581574
Kind Code:
B2
Abstract:
Provided is a narrow-width, large-diameter radial tire which is a passenger-vehicle pneumatic radial tire with improved wet performance and rolling resistance performance. When the passenger-vehicle pneumatic radial tire of the disclosure is assembled to a rim and filled with an internal pressure of 250kPa or more, an SW/OD ratio of a sectional width SW to an outer diameter OD(mm) of the tire is 0.26 or less if the tire has a sectional width SW of less than 165(mm), whereas a sectional width SW and an outer diameter OD(mm) of the tire satisfy a relation of 2.135 ×SW+282.3‰¤OD if the tire has a sectional width SW of 165(mm) or more, a dynamic storage modulus E' at 30°C of the tread rubber is 6.0MPa to 12.0MPa and a loss tangent tan´ at 60°C of the tread rubber is 0.05 to 0.15, and a dynamic storage modulus E' at 30 °C of the buttress rubber is 1/2 or less, and a loss tangent tan´ at 60°C of the buttress rubber is 0.1 or less.
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| JP4283783 | Pneumatic tires |
Inventors:
Shintaro Hatanaka
Isao Kuwayama
Isao Kuwayama
Application Number:
JP2016523163A
Publication Date:
September 25, 2019
Filing Date:
May 28, 2015
Export Citation:
Assignee:
Bridgestone Corporation
International Classes:
B60C11/00; B60C3/04
Domestic Patent References:
| JP7164821A | ||||
| JP2005336347A | ||||
| JP2008143485A | ||||
| JP9164810A |
Foreign References:
| WO2013065319A1 |
Attorney, Agent or Firm:
Kenji Sugimura
Yamaguchi Yusuke
Rei Ito
Yamaguchi Yusuke
Rei Ito