20140014245 | TIRE FOR A HEAVY VEHICLE, AND ARRANGEMENT OF TIRES ON THE DRIVE AXLE AND ON THE STEERING AXLE - Tire for a heavy goods vehicle having a tread provided on one side of the equatorial median plane with a sculpture of a first kind and on the other side of the equatorial median plane with a sculpture of a second kind, the first kind of sculpture comprising at least three grooves of generally circumferential orientation, these grooves delimiting at least two ribs of generally circumferential orientation, these ribs being provided with a plurality of sipes oriented transversely or substantially transversely, the second kind of sculpture comprising at least two grooves of generally circumferential orientation and a plurality of grooves of generally transverse orientation, these grooves delimiting a plurality of blocks, defined on each kind of sculpture is a ratio of surface recess, this tread being characterized in that the ratio of surface recess of the first kind of sculpture is equal to the ratio of recess of the second kind of sculpture. | 01-16-2014 |