| abstract |
The invention relates to a tyre with a tread comprising a rubber composition containing at least: 35 to 65 phr of an emulsion styrene-butadiene (E-SBR) copolymer, known as the first diene elastomer, having a content of 1,4-trans butadienyl units greater than 50 wt.-% of all of the butadienyl units; 35 to 65 phr of a polybutadiene (BR), as a second diene elastomer; optionally, 0 to 30 phr of another diene elastomer, known as the third diene elastomer; 90 to 150 phr of a reinforcing inorganic filler; and a plasticising system comprising (i) a content A of between 10 and 60 phr of a hydrocarbon resin having a Tg above 20°C and (ii) a content B of between 10 and 60 phr of a plasticiser that is liquid at 20°C and has a Tg below -20°C, wherein A+B is greater than 45 phr. The use of such an emulsion SBR and BR in the quantities required, combined with the high contents of inorganic filler and plasticiser in the tyre tread composition of the invention, provides improved wet grip and durability in relation to a control composition, without negatively affecting rolling resistance. |