Title:
ランフラットタイヤ
Document Type and Number:
Japanese Patent JP6480698
Kind Code:
B2
Abstract:
The run-flat tire of this disclosure includes a tread portion, a pair of sidewall portions, bead portions, side reinforcing rubbers with crescent-like cross section, a carcass formed of plies of radially arranged cords, wherein: when the tire is mounted to a rim, and an internal pressure of 250 kPa or more is applied to the tire, in a case where a sectional width SW of the tire is less than 165 mm, a ratio of the sectional width SW to an outer diameter OD of the tire, SW/OD, is 0.26 or less; in a case where the sectional width SW of the tire is 165 mm or more, the sectional width SW and the outer diameter OD of the tire satisfy a relation expression OD¥2.135×SW+282.3 (mm); the bead portions have bead cores, and further have bead fillers on a tire radial outer side of the bead cores; and the relation expression 1.8¤H1/H2¤3.5 is satisfied.
Inventors:
Isao Kuwayama
Shintaro Hatanaka
Shintaro Hatanaka
Application Number:
JP2014205248A
Publication Date:
March 13, 2019
Filing Date:
October 03, 2014
Export Citation:
Assignee:
Bridgestone Corporation
International Classes:
B60C3/04; B60C17/00; B60C9/08; B60C15/06
Domestic Patent References:
| JP2005247007A | ||||
| JP2013063765A | ||||
| JP82220A | ||||
| JP2005119384A |
Foreign References:
| WO2015182153A1 |
Attorney, Agent or Firm:
Kenji Sugimura
Kazuyuki Tomita
Yamaguchi Yusuke
Kazuyuki Tomita
Yamaguchi Yusuke
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