Believe me I have had every damn thing rattle my steering wheel.I have a 91 BMW 318is with airbag .What a pain. I sure dont want to get smacked by that gun powder charged bastard.Anyway all that you have is a loose steering colum nut. Tighted it.Im sure. But if not and it dont vary on speed go for the rack,balljoints,oh nevermind thats it the colum nut .Tighten it.