well they don't actually fuse, but aluminum will corrode just enough to be difficult to get off....plyers have to be used...stainless work better, but plastic does nothing but maybe keep the dirt out...and really that is all they are for anyway...each to their own...but if using the fancy aluminum...be sure to put a little 3-1 oil or something of this sort on them, or just routinely take them off once in awhile and check pressure...a good tire shop, which I have a very good friend that owns a chain of Goodyear stores, will put your pressure at the tire's recommended psi...tires wear out for a lot reasons, improper air pressure, the biggie, alignment, driving style, the roads you travel everyday, shocks, springs, struts etc can help wear tires as well. Sometimes its just a bad tire...tires are usually neglected the most on cars...