A for inspecting the internal surface located between a first and a second bead of a tire (P), comprising means for acquiring the image of the internal surface (1) of the tire, and centering means that are able to lock the first bead around its entire circumference on a reference plate, and to set the tire into relative rotation about its axis XX′ with respect to said image acquisition means. This device comprises means for opening and for holding the second bead, said means comprising two internal holding rollers (32, 32) which have a generally radial axis, and at least one external holding roller (33) which has a generally radial axis, is disposed substantially in the middle of the angular sector formed by the two internal holding rollers (31, 32) and is able to come into abutment against the external part of said second bead, the internal (31, 32) and external (33) holding rollers being mounted so as to rotate as one about the axis XX′ of said image acquisition means (1).