The present invention relates to a tyre for vehicle wheels (100), comprising: a carcass structure having opposite lateral edges terminating in respective bead structures (103), said carcass structure comprising at least one carcass ply (101); a belt structure (106) applied in a radially external position with respect to said carcass structure; a tread band (109) applied in a radially external position with respect to said belt structure (106); a pair of sidewalls (108) applied laterally on opposite sides with respect to said carcass structure; at least one layer of sealing material (107) applied in a radially inner position with respect to said at least one carcass ply (101); wherein said sealing material comprises: from 20 phr to 99 phr, preferably from 50 phr to 90 phr, of at least one butyl elastomer; from 1 phr to 80 phr, preferably from 10 phr to 50 phr, of at least one block copolymer elastomer; from 10 phr to 70 phr, preferably from 20 phr to 40 phr, of at least one tackifying agent.