A wheel rim protector is a device for safeguarding the rim of an automobile tire during the application of cleaning or decorative compositions in detailing processes. The protector is designed to be held by a user or temporarily attached to the rim. The wheel rim protector comprises a fan-like structure with multiple ribs pivotally connected to a handle, facilitating selective expansion and retraction. A shield, affixed to the ribs, includes magnets for magnetic attachment to ferromagnetic materials of the rim. The protector may be made from resilient and washable materials, which ensures durability and ease of maintenance in various detailing applications.