Hello! George from NJ. Have a 2002 Buick Le Sabre that has a noticable noise when when moving. Sounds like wheel or tire noise. Noise remains when trans axle is in neutral and when engine is switched off. Have rotated tires but no change. Vehicle miles - 50,000. Difficult to tell if noise is front or rear. No change when turning. No difference in performance ie pulling to one side, braking, etc. Wheel bearing?? Appreciate any thoughts!