| abstract |
Winter tyre with improved grip on melting ice, the tread of which comprises a rubber composition comprising at least one diene elastomer such as natural rubber and/or polybutadiene, more than 30 phr of a liquid plasticizing agent, between 50 and 150 phr of a reinforcing filler such as silica and/or carbon black, between 2 and 50 phr of a powder of water-soluble microparticles such as microparticles of magnesium sulphate and between 2 and 50 phr of water-soluble short fibres such as PVA fibres. |