I have recently purchased a used 05 Cadillac CTS. I love the look of it and how it feels behind the wheel except for one really annoying loud noise that comes from the wheel. I took it back to the dealership and they told me this is a normal wheel noise. the noise becomes very apparent at about 40mph and then you really hear it at 60, but then when you get faster it seems to go away. It is loud and even the radio doesnt keep me from hearing it. It seems to me that a car this stylish should be a little quieter. Does anyone else have this constant noise from the wheel? It sounds like a humming noise but with thud sounds as if the tire had a ball in it or something like that. thanks in advance. I am going back to the dealer tomorrow morning so they can check it again. I also feel a slight vibration in the wheel with the noise. I just dont accept that this is normal...please help.