TIRE - BRIDGESTONE CORP

Title:

TIRE

Document Type and Number:

WIPO Patent Application WO/2015/004913

Kind Code:

A1

Abstract:

Provided is a tire which is configured so that driving stability and water discharge properties on a wet road surface can be maintained and so that the uneven wear of the treading surface of the tread can be minimized. A tire is configured in such a manner that the treading surface of the tread has lands defined by circumferential grooves extending in the circumferential direction of the tire, each of the lands having arranged therein lateral grooves extending across the land. The lateral grooves are arranged so that, when the lateral grooves are projected on the equatorial plane of the tire, lateral grooves adjacent to each other in the circumferential direction of the tire do not overlap each other. Each of the lateral grooves is composed of: a center region extending tilted relative to the width direction of the tread; and side regions extending from both ends of the center region toward circumferential grooves at a tilt angle relative to the width direction of the tread, the tilt angle being less than the tilt angle of the center region. Each of the side regions has a groove width expanding toward a circumferential groove. The lateral grooves have sipes extending inward in the radial direction of the tire from the bottoms of the lateral grooves, each of the sipes having a shallow bottom only in the center region, the shallow bottom being disposed near the boundary between at least the center region and a side region in such a manner that the start point of the shallow bottom is located at a distance from the boundary.

Inventors:

YAMAMOTO NOBUYUKI (JP)

Application Number:

PCT/JP2014/003648

Publication Date:

January 15, 2015

Filing Date:

July 09, 2014

Export Citation:

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Assignee:

BRIDGESTONE CORP (JP)

International Classes:

B60C11/12; B60C11/04; B60C11/13

Foreign References:

JP2010179827A	2010-08-19
JPH10309910A	1998-11-24
JP2010254154A	2010-11-11
JPH10151915A	1998-06-09
JP2008222075A	2008-09-25
JP2012179965A	2012-09-20
JP2013052789A	2013-03-21
JP2008155789A	2008-07-10
JP2002103922A	2002-04-09

Other References: