I just installed Kleen Wheels on my daughter's 2004.5 S40. Not sure if the wheels were ever off the car yet, it has about 19,000 miles and she purchased it at about 7,500 miles (it was the dealer's service loaner). After removing all lug nuts I had to hammer on the tires with my sledge to get the wheels to break free from the axle hub. All 4 were rusted on tight. The wheels are the 16 x 6.5 7 spoke Caligo wheels. Is this a known issue? I cleaned the hubs with a brass brush and applied anti-sieze before reassembling.