Device and method for inspecting a tyre, in particular using an interferometric measuring method

device for testing a tire (10) by means of an interferometric measuring method, With a measuring head (20) through which the tire (10) for generating a measurement result (70, 71, 72) is scannable; a positioning means (30) through which the measuring head (20) in a viewing position positioned and aligned in a direction of observation, and a control and display device (40) through which the positioning means (30) controllable, and the measurement result (70, 71, 72) is displayable; thereby in that the control and display means (40) at least a display panel (44, 45, 62) for symbolic display of the viewing position and / or the direction of observation of the measuring head (20) in respect to the tire (10).