Patent ID: 7150301
Filing Date: 2006-12-19
Classification: B60C,Y02T,Y10T

Abstract:
1. A tyre for a motor vehicle, comprising: at least one carcass ply; a belt structure in a radially-external position relative to the at least one carcass ply; a tread band in a radially-external position relative to the belt structure; a pair of sidewalls in axially-external positions relative to the at least one carcass ply; and a pair of beads; wherein the beads comprise bead wires or circumferentially-inextensible annular inserts, wherein opposite lateral edges of the at least one carcass ply are associated with respective beads, wherein the at least one carcass ply comprises a first composition comprising an elastic modulus at 70° C. less than or equal to 5.0 MPa and a viscous modulus at 70° C. less than or equal to 0.50 MPa, and wherein the sidewalls comprise a second composition comprising an elastic modulus at 70° C. greater than or equal to 3.5 MPa and a viscous modulus at 70° C. less than or equal to 0.50 MPa.