Tyre for vehicle wheels

A tyre comprising:

• a carcass structure comprising a carcass ply having opposite lateral edges associated to respective bead structures;
• a tread band applied in a radially outer position with respect to the carcass structure;
• a pair of sidewalls applied laterally on opposite sides of the carcass structure;
• and
• at least one colored decorative element having a thickness equal to or greater than 200 μm applied on at least one side of the pair of sidewalls,
• wherein the pair of sidewalls comprises an elastomeric composition comprising (i) at least one diene elastomeric polymer, and (ii) a non-staining ozone protection system,
• wherein the at least one colored decorative element is made of a cross-linkable elastomeric composition comprising:
• (i) 100 phr of elastomeric polymer comprising from 30 phr to 70 phr of natural and/or synthetic isoprene rubber, and from 30 phr to 70 phr of a rubber chosen from butyl rubber, halobutyl rubber, butadiene rubber, styrene-butadiene rubber, and mixtures thereof, and
• (ii) from 5 phr to 120 phr of at least one reinforcement filler,
• wherein the at least one colored decorative element is directly applied green or partially vulcanized to the at least one sidewall of the pair of sidewalls of the tyre when green, and co-vulcanized with the tyre,
• wherein the non-staining ozone protection system consists of at least one phenolic antioxidant in an amount equal to or greater than 3 phr and at least one cyclic acetal or enol-ether antioxidant in an amount equal to or greater than 1 phr, and the non-staining ozone protection system is free of (i) antioxidants and/or antiozonants based on aromatic amines, (ii) waxes and (iii) other polymeric static protective agents,
• wherein the at least one phenolic antioxidant is selected from the group consisting of:
• pentaerythrityl tetrakis[3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate], 2,2-thio-diethylene bis-[(3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate)], octadecyl-3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate, isooctyl-3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate, 1,3,5-trimethyl-2,4,6-tris(3,5-di-t-butyl-4-hydroxybenzyl)benzene, 4,6-bis(dodecylthiomethyl)-o-cresol, 4,6-bis(octytiomethyl)-o-cresol, triethyleneglycol-bis[(3-(3-t-butyl-5-methyl-4-hydroxyphenyl)propionate)], 1,6-hexanediol-bis[(3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate], and 4-{[4,6-bis(octylsulphanyl)-1,3,5-triazin-2-yl]amino]-2,6-di-t-butylphenol, and
• the at least one cyclic acetal or enol-ether antioxidant is selected from the group consisting of 3,9-di-3-cyclohexen-1-yl-2,4,6,10-tetraoxaspyro[5.5]undecane, and cyclohexen-3-ylidenmethyl-benzylether.