I was driving last week and all of a sudden it sounded like I had a flat tire, I also felt the tire shaking(Passenger side). Doing about 65mph. Then I heard it break, the axle broke . Got a new one put on and it still does the same thing, shakes and sounds like it is a flat tire and it does it at 60 mph and up. Can anyone help me? I have a 96 Z24, automatic trans. Tire, rim is not bent, just got it balanced yesterday.