The invention relates to a tyre tread (10) having an outer tread block material (18) or a first colour and an underlying layer (20) comprising a tread block material or a second colour. The second colour is visually distinguishable from the first colour such that when an outer tread block layer (18) is partially worn away, the second colour becomes visible and is indicative of tyre wear. In an alternative embodiment, the tyre tread wear indicator (100, 200) comprises an insert for insertion into a tyre (120). The insert comprises an outer sacrificial layer (106, 206) comprising a material of a first colour; and underlying indicator sacrificial layers (108, 110, 208, 210) comprising a material of a second and a third colour. The second and third colours are visually distinguishable from the first colour and hence indicative of tyre wear. The embodiments of the invention therefore provide an automatic, visually discernible warning to drivers and others of tyre wear, and the extent thereof. The invention therefore greatly enhances vehicle safety.
A tyre tread and sacrificial tyre wear indicator
2020-03-18
Patent
Elektronische Ressource
Englisch
IPC: | B60C VEHICLE TYRES , Fahrzeugreifen |