Tire comprising a composition essentially free of guanidine derivative and comprising a primary amine

A tire comprising a rubber composition based on:

• at least one diene elastomer,
• a reinforcing filler predominantly composed of silica,
• a crosslinking system that comprises sulfur, and
• a primary amine of formula (I):
• R—NH2 (I),
• in which R represents a linear or branched hydrocarbon group comprising from 8 to 24 carbon atoms,
• wherein the rubber composition includes less than 0.5 phr of guanidine derivative,
• wherein the rubber composition comprises less than 0.5 phr zinc, and
• wherein the rubber composition further comprises a hydroxysilane polysulfide coupling agent corresponding to the general formula (III):
• (HO)aR(3-a)Si—R′—Sx—R′—SiR(3-b)(OH)b (III),
• wherein the R radicals, which are identical or different, are hydrocarbon groups;
• wherein the R′ radicals, which are identical or different, are divalent connecting groups;
• wherein a and b, which are identical or different, are equal to 1 or 2;
• and
• wherein x is a number greater than or equal to 2.