Elastomeric compound for tread band of a tyre and relative tyre

An elastomeric composition for a vehicle wheel tyre comprising:

• from 0 phr to 30 phr of at least one liquid polymer,
• from 0 phr to 20 phr of at least one resin,
• from 10 phr to 60 phr of at least one plasticising oil,
• wherein the sum of the at least one liquid polymer, the at least one resin, if present, and the at least one plasticising oil ranges from 20 phr to 90 phr,
• 100 phr of a mixture of solid diene elastomeric polymers, wherein the polymers mixture comprises:
• from 10 phr to 50 phr of at least one solid polybutadiene (BR) having a weight average molecular weight Mw ranging from 300,000 g/mol to 600,000 g/mol and a cis double bond content of at least 95%,
• from 10 phr to 70 phr of at least one emulsion-polymerised solid styrene butadiene copolymer (E-SBR) having a Tg ranging from −60° C. to −20° C., a Mooney viscosity at 160° C. ranging from 30 to 70 MU, and an amount of styrene ranging from 15% to 50%, and
• from 10 phr to 80 phr of at least one solution-polymerised solid styrene butadiene copolymer (S-SBR), chain-functionalised with multi-branch coupling agents, having:
• a weight average molecular weight Mw greater than 500,000 g/mol, an amount of styrene ranging from 25% to 50%, and an amount of vinyl ranging from 10% to 50%, a Tg ranging from −50° C. to −20° C., a Mooney viscosity at 160° C. ranging from 60 to 100 MU, or any one characteristic thereof or any combination of characteristics thereof,
• at least 40 phr of at least one reinforcing filler, and
• at least 1 phr of at least one vulcanising agent.