Method for checking tyres, comprising: i. providing a tyre having a rotation axis (X) on a support plane defining a rested lateral portion and a free lateral portion of the tyre; ii. detecting at least one three-dimensional profile of a ring-shaped surface of said tyre with centre in said rotation axis (X), said three-dimensional profile including a height of a plurality of points of said ring-shaped surface and storing said three-dimensional profile in a memory adapted for being accessible to access said three-dimensional profile; iii. providing a tool configured to apply a deformation oriented towards the support plane to a measurement surface (M) of said free lateral portion and shifting said tool towards said tyre arranged on the support plane so as to rest on the measurement surface (M), said measurement surface (M) being a portion of said ring-shaped surface ; iv. pushing said measurement surface (M) through said tool up to a predetermined tool height calculated with respect to a value that is a function of the height given by said three-dimensional profile of said ring-shaped surface for the measurement surface (M) prior to deformation; v. setting said tyre in relative rotation with respect to said tool so that said tool is in successive contact with a plurality of different measurement surfaces (M), portions of said ring-shaped surface , angularly spaced, along at least one complete relative rotation of said tyre about said rotation axis (X); vi. measuring a force (F) exerted by said tool on said plurality of measurement surfaces (M) at a plurality of relative angular positions between said tyre and said tool along said complete rotation; and vii. determining whether said tyre has a defect based on said measured force (F). i. providing a tyre having a rotation axis (X) on a support plane defining a rested lateral portion and a free lateral portion of the tyre; ii. detecting at least one three-dimensional profile of a ring-shaped surface of said tyre with centre in said rotation axis (X), said three-dimensional profile including a height of a plurality of points of said ring-shaped surface and storing said three-dimensional profile in a memory adapted for being accessible to access said three-dimensional profile; iii. providing a tool configured to apply a deformation oriented towards the support plane to a measurement surface (M) of said free lateral portion and shifting said tool towards said tyre arranged on the support plane so as to rest on the measurement surface (M), said measurement surface (M) being a portion of said ring-shaped surface ; iv. pushing said measurement surface (M) through said tool up to a predetermined tool height calculated with respect to a value that is a function of the height given by said three-dimensional profile of said ring-shaped surface for the measurement surface (M) prior to deformation; v. setting said tyre in relative rotation with respect to said tool so that said tool is in successive contact with a plurality of different measurement surfaces (M), portions of said ring-shaped surface , angularly spaced, along at least one complete relative rotation of said tyre about said rotation axis (X); vi. measuring a force (F) exerted by said tool on said plurality of measurement surfaces (M) at a plurality of relative angular positions between said tyre and said tool along said complete rotation; and vii. determining whether said tyre has a defect based on said measured force (F). <EOS>