When the steering is full lock (to the left, if that matters), there's a lovely grinding sound coming from the front of the Jeep. Initially, it thought it was tire rub, but i don't appear to have clearance issues and the sound has a distinct metallic flavor. Haven't gotten the Jeep off the ground yet to give the tires a yank but was wondering if wheel bearings and/or u-joints wearing/failing are common and make this kind of noise.