Tyre for vehicle wheels comprising a tread band, on which are defined: • a first shoulder region and a second shoulder region axially opposite each other; • a central region interposed between said first and second shoulder regions; • a plurality of pairs of first blocks and second blocks, arranged in regular succession along the circumferential development of said central region, each first block and each second block of each of said pairs being at least partially aligned with each other along an axial direction defined on said tread band, • a plurality of first pairs of main grooves (10, 20), arranged in regular succession along the circumferential development of said tread band to partially delimit said first and said second blocks (7, 8), each first pair of main grooves being formed by a first main groove extending from said first shoulder region towards said central region and by a second main groove extending from said second shoulder region towards said central region, • a plurality of second pairs of main grooves (30, 40), arranged in regular succession along the circumferential development of said tread band in an alternating position with said first pairs of main grooves (10, 20), each second pair of main grooves being formed by a third main groove extending from said first shoulder region towards said central region and by a fourth main groove extending from said second shoulder region towards said central region, wherein in each first pair of main grooves said second main groove comprises an axially internal end connected with said first main groove, wherein in each first pair of main grooves said first main groove comprises an terminal segment, axially internal, connected with a second main groove circumferentially subsequent to said second main groove, so as to axially separate a first block and a second block of one of said pairs of first and second blocks, wherein in each second pair of main grooves said third and said fourth main groove comprise respective axially internal ends (30b, 40b), and in which a plurality of first pairs of secondary grooves (50, 60) are formed on said tread band, arranged in regular succession along the circumferential development of said tread band to at least partially delimit said first and said second blocks (7, 8) from their axially outer side, each first pair of secondary grooves comprising a first secondary groove extending from a first main groove and a second secondary groove extended from a second main groove, characterized in that said axially internal ends (30b, 40b) are extended by respective first sipes (30c, 40c) and connected to said terminal segment of said first main groove, so as to circumferentially separate said first and said second block (7, 8) into respective first (7a, 8a) and second (7b, 8b) portions of block. • a first shoulder region and a second shoulder region axially opposite each other; • a central region interposed between said first and second shoulder regions; • a plurality of pairs of first blocks and second blocks, arranged in regular succession along the circumferential development of said central region, each first block and each second block of each of said pairs being at least partially aligned with each other along an axial direction defined on said tread band, • a plurality of first pairs of main grooves (10, 20), arranged in regular succession along the circumferential development of said tread band to partially delimit said first and said second blocks (7, 8), each first pair of main grooves being formed by a first main groove extending from said first shoulder region towards said central region and by a second main groove extending from said second shoulder region towards said central region, • a plurality of second pairs of main grooves (30, 40), arranged in regular succession along the circumferential development of said tread band in an alternating position with said first pairs of main grooves (10, 20), each second pair of main grooves being formed by a third main groove extending from said first shoulder region towards said central region and by a fourth main groove extending from said second shoulder region towards said central region, wherein in each first pair of main grooves said second main groove comprises an axially internal end connected with said first main groove, wherein in each first pair of main grooves said first main groove comprises an terminal segment, axially internal, connected with a second main groove circumferentially subsequent to said second main groove, so as to axially separate a first block and a second block of one of said pairs of first and second blocks, wherein in each second pair of main grooves said third and said fourth main groove comprise respective axially internal ends (30b, 40b), and in which a plurality of first pairs of secondary grooves (50, 60) are formed on said tread band, arranged in regular succession along the circumferential development of said tread band to at least partially delimit said first and said second blocks (7, 8) from their axially outer side, each first pair of secondary grooves comprising a first secondary groove extending from a first main groove and a second secondary groove extended from a second main groove, characterized in that said axially internal ends (30b, 40b) are extended by respective first sipes (30c, 40c) and connected to said terminal segment of said first main groove, so as to circumferentially separate said first and said second block (7, 8) into respective first (7a, 8a) and second (7b, 8b) portions of block.