Patent ID: 7900667
Filing Date: 2011-03-08
Classification: B60C,C08K,C08L,Y10S

Abstract:
1. A tire, the tire comprising a tread, the tread comprising: a rubber composition, the rubber composition based on: a diene elastomer; more than 50 phr of silica as an inorganic reinforcing filler; between 2 and 15 phr of an inorganic filler/diene elastomer coupling agent; between 1 and 10 phr of a methylene acceptor, between 0.5 and 5 phr of a methylene donor; and optionally carbon black, present in an amount less than 20% by weight relative to the quantity of total reinforcing filler, the quantity of total reinforcing filler being the sum of the silica and the carbon black, wherein the tread presents a radially increasing rigidity gradient from the surface towards the inside of the tread after mechanical run-in of the tread.