I spun balanced many a tire on an old Hunter on the car spin balancer in the 1960s and 70s. Worked great on steel rims only. Would not fit most aluminum wheels at the time. Had to take a pry bar and pry on brake calipers to get the drag off before using the balancer. Drum brakes it worked fine. You just balanced the rear tires/wheels on the front first. Use to take a clean grease rag and lay on top of the fender and watch until you had no vibration in the rag.