发明名称 PNEUMATIC TIRE
摘要 PROBLEM TO BE SOLVED: To provide a pneumatic tire in which wet performance, dry performance and wear performance can be improved at favorable balance.SOLUTION: A pneumatic tire in which the mounting direction of tire front and back sides when mounted to a vehicle is designated includes a plurality of main grooves 10 extending in a tire circumferential direction in a tread. At least one row of continued lands 11 to 13 continuously extending in a tire circumferential direction while being held by a pair of the main grooves 10 is segmented, and a plurality of lug grooves are formed in the continuous land each having one end opened to the main groove 10 and the other end terminated in the continuous land. When the continuous land is segmented with a center position C in the width direction of the continuous land as a border into a vehicle inside region and a vehicle outside region, a groove area ratio Sin the vehicle inside region of the continuous land is controlled to be larger than a groove area ratio Sin the vehicle outside region of the continuous land. The continuous land is constituted of a first rubber layer R1 at the center side of the land and a second rubber layer R2 at both end sides of the land in which the hardness of the second rubber layer R2 at 20°C is controlled to be higher than the hardness of the first rubber layer R1 at 20°C.
申请公布号 JP2013180637(A) 申请公布日期 2013.09.12
申请号 JP20120045135 申请日期 2012.03.01
申请人 YOKOHAMA RUBBER CO LTD:THE 发明人 AKASHI YASUTAKA
分类号 B60C11/00;B60C5/00;B60C11/03;B60C11/04 主分类号 B60C11/00
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