Rubber composition

A rubber composition based on at least:

• an elastomer matrix comprising at least one first diene elastomer bearing at least one SiOR1 function and at least one amine function, R1 being a hydrogen atom or a hydrocarbon radical, the SiOR1 function not located at chain ends of the at least one first diene elastomer, the SiOR1 function bearing the at least one amine function;
• a reinforcing filler comprising a reinforcing inorganic filler in an amount greater than 90 phr;
• and
• a plasticizing agent comprising a hydrocarbon resin and a liquid plasticizer, the liquid plasticizer comprising a vegetable oil and a liquid polybutadiene polymer in an amount equal to or less than 25 phr, the liquid polybutadiene polymer bearing at least one function selected from the group consisting of a silane, a hydroxyl, an anhydride, and combinations thereof,
• wherein the at least one first diene elastomer is a styrene-butadiene copolymer being a modified diene elastomer via a N,N—(C1-C4) dialkylaminopropyltrialkoxysilane,
• wherein the at least one first diene elastomer has a glass transition temperature of less than −40° C.,
• wherein the reinforcing inorganic filler predominately comprises silica,
• wherein an amount of the hydrocarbon resin is greater than an amount of the liquid plasticizer,
• wherein an amount of the vegetable oil is greater than one-third of an amount of the liquid polybutadiene polymer,
• wherein the liquid polybutadiene polymer comprises 1,3-butadiene derived monomer units being 1,2-vinyl, 1,4-trans and 1,4-cis,
• wherein a proportion of 1,2-vinyl in an entirety of the 1,3-butadiene derived monomer units present in the liquid polybutadiene polymer is less than 40 mol %,
• wherein a sum of proportions of 1,4-trans and 1,4-cis in the entirety of the 1,3-butadiene derived monomer units present in the liquid polydiene polymer is more than 60 mol %, and
• wherein the liquid polybutadiene polymer has a glass transition temperature of less than −60° C. and a number average molar mass of less than 6000 g/mol.