Abstract: A guard for wheel rims comprising a plurality of louvers and elongated shaft members. A housing member receives one end of the shafts and they are slidably received by cooperating track members mounted on one of the surfaces of the louvers. The shaft members are stacked and pivotally mounted to rotate over one common point. A locking assembly locks the relative position of the shaft members with respect to track members in accordance with the rim size. A locking assembly locks the relative angular positions of the louvers so that a user can selectively form a substantial arch to cover a substantial portion of a rim.