A system for monitoring deformations of a tire fitted on a rim associated with a vehicle includes a reflecting element positioned on an inner surface of the tire and a moving station located in a predetermined position on the rim. The reflecting element reflects an optical beam and includes a region having at least one area of high light reflection and at least one area of low light reflection. The moving station sends the optical beam toward the inner surface, receives one or more reflections of the optical beam from the inner surface or the reflecting element, and emits a signal proportional to the deformations of the tire in a longitudinal direction, in a transverse direction, and in a vertical direction.