Title:
PNEUMATIC TIRE
Document Type and Number:
WIPO Patent Application WO/2018/179755
Kind Code:
A1
Abstract:
Provided is a pneumatic tire that can realize both traction performance and uneven wear resistance at high levels. The pneumatic tire is equipped with a tread section 1, a side wall section 2, and a bead section 3, wherein: a plurality of lug main grooves 11 are formed in the tread section 1; the lug main grooves 11 are symmetrically inclined on both sides of a tire equator; an inclination angle α of the lug main grooves 11 with respect to a tire width direction lies in the range 15° ≤ α ≤ 45°; a width W1 of the lug main grooves 11 at a tread end satisfies a relationship 0.7 ≤ W1/W2 ≤ 1.5 with respect to an interval W2 between the lug main grooves 11 at the tread end; a plurality of shoulder inclined grooves 12, which connect the lug main grooves 11 to each other, are formed in the tread section 1; the shoulder inclined grooves 12 are inclined in the directions opposite the lug main grooves 11; an inclination angle β of the shoulder inclined grooves 12 with respect to the lug main grooves 11 lies in the range 80° ≤ β ≤ 100°; a center position of each shoulder inclined groove 12 is disposed within a range of 15-35% of a tread width TW from the tire equator; an area A1 of the shoulder inclined grooves 12 satisfies a relationship 0.2 ≤ A1/A2 ≤ 0.6 with respect to an area A2 of the shoulder block; and a groove area ratio of the tread section 1 lies in the range 0.4-0.7.
Inventors:
KATO YOSHITAKA (JP)
Application Number:
PCT/JP2018/002290
Publication Date:
October 04, 2018
Filing Date:
January 25, 2018
Export Citation:
Assignee:
YOKOHAMA RUBBER CO LTD (JP)
International Classes:
B60C11/03; B60C11/13
Foreign References:
| JP2005178768A | 2005-07-07 | |||
| JP2014084109A | 2014-05-12 | |||
| JPH0314703A | 1991-01-23 | |||
| JP2003205706A | 2003-07-22 | |||
| JP2010042806A | 2010-02-25 | |||
| JP2014234091A | 2014-12-15 |
Attorney, Agent or Firm:
SEIRYU PATENT PROFESSIONAL CORPORATION et al. (JP)
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