Method for checking tyres of a plurality of different models, said method comprising: - providing a database wherein each model of tyre of the plurality of different models is associated with a three-dimensional profile of a model tyre and a compression force, said three-dimensional profile including a height with respect to a resting plane of said model tyre, the resting plane defining a resting side portion and a free side portion, of a plurality of points of an outer surface of said free side portion, the resting side portion resting on the resting plane and the free side portion being opposite to the resting side portion and arranged at a certain height from the resting plane, said providing a database including: i. providing said model tyre on said resting plane, the model tyre having a rotation axis; ii. pushing a measurement surface of said model tyre through at least one device up to a predetermined device height (Qdevice) that is calculated with respect to a value that is a function of said height of an undeformed measurement surface as present in said three-dimensional profile of the model tyre, said measurement surface belonging to said outer surface of said free side portion; iii. setting said model tyre in relative rotation with respect to said at least one device, so as to push a plurality of different measurement surfaces, angularly spaced, along at least one complete relative rotation of said model tyre about said rotation axis; iv. measuring a force exerted on said plurality of measurement surfaces at a plurality of relative angular positions of said model tyre; v. calculating a statistical value as a function of said force; vi. associating said statistical value as a function of said force with said three-dimensional profile of model tyre in said database; vii. repeating the actions i.-vi. for all of the model tyres of said plurality of different models; - applying, to an outer surface of a tyre to be checked corresponding to a given model of tyre, a compression force equal to said statistical value as a function of said force according to said model to which said tyre to be checked corresponds, as obtained from said database, to detect a possible defect of said tyre to be checked. - providing a database wherein each model of tyre of the plurality of different models is associated with a three-dimensional profile of a model tyre and a compression force, said three-dimensional profile including a height with respect to a resting plane of said model tyre, the resting plane defining a resting side portion and a free side portion, of a plurality of points of an outer surface of said free side portion, the resting side portion resting on the resting plane and the free side portion being opposite to the resting side portion and arranged at a certain height from the resting plane, said providing a database including: i. providing said model tyre on said resting plane, the model tyre having a rotation axis; ii. pushing a measurement surface of said model tyre through at least one device up to a predetermined device height (Qdevice) that is calculated with respect to a value that is a function of said height of an undeformed measurement surface as present in said three-dimensional profile of the model tyre, said measurement surface belonging to said outer surface of said free side portion; iii. setting said model tyre in relative rotation with respect to said at least one device, so as to push a plurality of different measurement surfaces, angularly spaced, along at least one complete relative rotation of said model tyre about said rotation axis; iv. measuring a force exerted on said plurality of measurement surfaces at a plurality of relative angular positions of said model tyre; v. calculating a statistical value as a function of said force; vi. associating said statistical value as a function of said force with said three-dimensional profile of model tyre in said database; vii. repeating the actions i.-vi. for all of the model tyres of said plurality of different models; i. providing said model tyre on said resting plane, the model tyre having a rotation axis; ii. pushing a measurement surface of said model tyre through at least one device up to a predetermined device height (Qdevice) that is calculated with respect to a value that is a function of said height of an undeformed measurement surface as present in said three-dimensional profile of the model tyre, said measurement surface belonging to said outer surface of said free side portion; iii. setting said model tyre in relative rotation with respect to said at least one device, so as to push a plurality of different measurement surfaces, angularly spaced, along at least one complete relative rotation of said model tyre about said rotation axis; iv. measuring a force exerted on said plurality of measurement surfaces at a plurality of relative angular positions of said model tyre; v. calculating a statistical value as a function of said force; vi. associating said statistical value as a function of said force with said three-dimensional profile of model tyre in said database; vii. repeating the actions i.-vi. for all of the model tyres of said plurality of different models; - applying, to an outer surface of a tyre to be checked corresponding to a given model of tyre, a compression force equal to said statistical value as a function of said force according to said model to which said tyre to be checked corresponds, as obtained from said database, to detect a possible defect of said tyre to be checked.