I just bought four original Saab aluminum rims with studded tires and there is wheel weights on all four. When I changed the first front wheel I saw the wheel weights hitting the brake caliper, and l could not spin the wheel around with my hands. There really isnt much room between the brake calipers and the rim, and the only option is to remove the weights. Do I really need them? In the back there is not a problem as the caliper is much smaller.