Adapter for balancing wheels without Central hole (shaft 40mm). Adapter for balancing of wheels having Central hole. To install the adapter, use a calipers or similar measuring device to measure the distance between holes of fastening screws. After measuring the distances, the adapter is regulated accordingly and to it is attached a wheel. Further, the balancing process takes place as usual. The adapter is designed for installation on a balancer Trommelberg CB1980.