Patent ID: 6151959
Filing Date: 2000-11-28
Classification: B60C,G01M

Abstract:
A pneumatic tire for vehicle wheels, comprising:a) a carcass of toric form having a crown and a tread band disposed on said crown of said carcass, at least one circumferential portion of a radial external surface of said tread band having a plurality of radial cuts formed thereon, a first plurality of portions of said at least one portion lying between pairs of adjacent said cuts, said tread band comprising an internal band portion which directly underlies said at least one portion to be radially more internal relative to the at least one portion, said cuts of said at least one portion extending at most through a depth of said at least one portion, said internal band portion comprising a second plurality of portions which are not cut, wherein each portion of said second plurality of portions underlies a respective one of each of said first plurality of portions, the depth, width and mutual distance between said cuts being such that each portion of said first plurality of portions is for being immobile relative to the respective underlying portion of said second plurality of portions while the tire is being rotated;b) wherein the radial cuts are suitable to not perform any function regarding road holding of the tire during rotating of the tire at a predetermined speed and with a predetermined load in contact with a friction surface,c) wherein the radial cuts are suitable for verifying wearing of the at least one tread band portion through observation of disappearing of the radial cuts after the tire has stopped rotating.