Studded tyre comprising a tread band, in which respective pluralities of grooves and blocks are made, which as a whole define a tread pattern of said tyre, wherein: - a module is identified in said tread pattern, which module extends between opposite axial ends of said tread band and is the minimum tread band portion the configuration of which is successively repeated over the entire circumferential extent of the tread band to form said tread pattern, - said module is formed by a first and a second elementary portion (R, S) of the tread band, which extend between said axial ends of the tread band and are arranged in the same sequence inside each module, - each first elementary portion extends in a circumferential direction by an amount that corresponds to a long pitch or by an amount that corresponds to a short pitch and is shorter than said long pitch, - each second elementary portion extends in a circumferential direction by an amount that corresponds to said long pitch or by an amount that corresponds to said short pitch, - a number of studs that is equal to a predefined number is provided in at least 30% of said modules, - at least one first module formed by a first and a second elementary portion that both have a long pitch, and at least one pair of second modules, each second module being formed by a first and a second elementary portion that both have a short pitch, are identified between said modules, - a number of studs that is equal to said predefined number increased by one or two is provided in each first module, and - a number of studs that is equal to double said predefined number decreased by one or two is provided in each pair of adjacent second modules. - a module is identified in said tread pattern, which module extends between opposite axial ends of said tread band and is the minimum tread band portion the configuration of which is successively repeated over the entire circumferential extent of the tread band to form said tread pattern, - said module is formed by a first and a second elementary portion (R, S) of the tread band, which extend between said axial ends of the tread band and are arranged in the same sequence inside each module, - each first elementary portion extends in a circumferential direction by an amount that corresponds to a long pitch or by an amount that corresponds to a short pitch and is shorter than said long pitch, - each second elementary portion extends in a circumferential direction by an amount that corresponds to said long pitch or by an amount that corresponds to said short pitch, - a number of studs that is equal to a predefined number is provided in at least 30% of said modules, - at least one first module formed by a first and a second elementary portion that both have a long pitch, and at least one pair of second modules, each second module being formed by a first and a second elementary portion that both have a short pitch, are identified between said modules, - a number of studs that is equal to said predefined number increased by one or two is provided in each first module, and - a number of studs that is equal to double said predefined number decreased by one or two is provided in each pair of adjacent second modules.