This is a cover acting as a solid space of protection to protect the embellished surface of a wheel rim when installing a tire on it. The cover includes a circular structure designed in such way as to be held detachably on a wheel rim, the circular structure being made of two semi-annular sub-structures connected by at least one resilient element bringing the two sub-structures towards each other, a fastening system with motion limiting device, an inwardly curved circular contour and handles fixed to the circular structure for its handling. The elements are configured in order to fasten the circular structure and to be held detachably in an adjustable manner on a wheel rim.