(EN) The invention concerns a rubber composition for making tyres, comprising a diene elastomer, a reinforcing inorganic filler, a polysulphide alkoxysilane as (inorganic filler/elastomer) coupling agent with which are associated an aldimine (of formula R-CH=N-R) and a guanidine derivative. The invention also concerns a tyre or semi-finished product for tyres comprising said rubber composition. The invention further concerns an (inorganic filler/elastomer) coupling system for a rubber composition reinforced with an inorganic filler, consisting of the combination of a polysulphide alkoxysilane, an aldimine (R-CH=N-R) and a guanidine derivative.