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I was planning on just replacing the belt because it started squealing this morning and when I checked it after work the belt was a 3/4" off the tensioning pulley at an angle, worn on the side it was rubbing. I took the belt off just now and think at least the tensioning pulley spins freely and barely makes that grainy sound. I saw videos saying that means the bearings are bad. Im still inclined to keep the pulley because it is spinning well, after all, and my relative very versed in this sort of repair, though not on BMWs, said not to replace stand alone pulleys (those not powering anything) if they spin well. He recommended only replacing them if they are becoming seized or cause extra friction to the belt, etc. Do you have any thoughts on this? Im going to just put the new belt on and wait for a solid reply/something to break. Thanks.
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