Title:
PNEUMATIC TIRE
Document Type and Number:
Japanese Patent JP2019081490
Kind Code:
A
Abstract:
To improve wet braking performance and anti-stone biting performance while improving rolling resistance.SOLUTION: The pneumatic tire comprises five or more circumferential main grooves and a plurality of land parts having blocks divided by lug grooves. The ratio of length in a tire width direction of the block in an arrangement range to a tread spreading width is 0.55-0.70, the ratios of groove width of the circumferential main groove other than the outermost circumferential main groove to the tread spreading width and to the outermost circumferential main groove are 0.007-0.024 and 0.15-0.45 respectively, the ratio of a groove width of the outermost circumferential main groove to the tread spreading width is 0.025-0.055, the ratio of groove width of the lug groove to the tread spreading width is 0.003-0.016, and the ratio of length in the tire circumferential direction at midpoint positions of length in the tire circumferential direction of the lug groove to the maximum length in the tire circumferential direction of blocks in the land parts is 0-0.1.SELECTED DRAWING: Figure 2
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Inventors:
NAGASAWA HIDEKI
Application Number:
JP2017210580A
Publication Date:
May 30, 2019
Filing Date:
October 31, 2017
Export Citation:
Assignee:
YOKOHAMA RUBBER CO LTD
International Classes:
B60C11/03; B60C11/12
Attorney, Agent or Firm:
Sakai International Patent Office