Tire treads, especially tire treads for aircraft or for heavy vehicles, formed from a material that is based upon a cross-linkable rubber composition, the cross-linkable rubber composition comprising, per 100 parts by weight of rubber, between 40 phr and J 00 phr of a polyisoprene rubber, between 0 and 60 phr of a highly unsaturated diene rubber and between 1 phr and 25 phr of a polylerpene resin having a glass transition temperature of between 50 DEG C and 120 DEG C. The rubber composition further includes between 0.1 phr and 10 phr of a poly- thiosulfatc anti-reversion agent having the formula: MO3S-S-X-S-SO3M wherein X is an alkylene radical or a radical comprising two or more alkylene units, pairs of which units being linked through an oxygen or a sulfur atom, through a group SO2-, -NH-, - NH2 +-, -NlC1-16alkyl)- or -COO-, or through an arylene or cycloalkylene radical and M is a metal.