Title:
PNEUMATIC TIRE
Document Type and Number:
Japanese Patent JP2014213835
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a pneumatic tire which can suppress eccentric wear even at wear terminal stage.SOLUTION: In a pneumatic tire, a circumferential fine groove 5 extending to a tire circumferential direction is formed at a land part 4 which is defined between a circumferential main groove 3 and a tread grounding end TG, an annular groove 6 extending to the tire circumferential direction while continuing thereto is formed at a groove wall 5wi inside the tire width direction of the circumferential fine groove 5 from an opening end 5oi inside the tire width direction of the circumferential fine groove 5 up to the innermost end 5oi of the tire radial direction of the circumferential fine groove 5, and a contour of the circumferential fine groove 5 has first to fourth circles having R1 to R4 in curvature radii, a distance L1 in the tire width direction from the innermost end 6wi in the tire width direction of a groove wall 6w of the annular groove 6 up to the outside of the tire width direction of the fine groove 6 is 5.7 to 6.5 mm, and an angle θ with respect to a tread stepping surface of the groove wall 5wi inside the tire width direction of the circumferential fine groove is smaller than 90°.
Inventors:
ABE YASUNORI
KATAYAMA AKIE
KATAYAMA AKIE
Application Number:
JP2013095818A
Publication Date:
November 17, 2014
Filing Date:
April 30, 2013
Export Citation:
Assignee:
BRIDGESTONE CORP
International Classes:
B60C11/04; B60C11/01; B60C11/13
Domestic Patent References:
| JP2012162135A | 2012-08-30 | |||
| JPH0253606A | 1990-02-22 | |||
| JP2008168872A | 2008-07-24 | |||
| JP2007253875A | 2007-10-04 |
Foreign References:
| WO2008111582A1 | 2008-09-18 |
Attorney, Agent or Firm:
Kenji Sugimura
Kazuyuki Tomita
God Koichiro
Kazuyuki Tomita
God Koichiro