You should also check tire pressure. If the tires are worn at the edges due to low air pressure, the "wear bars" can cause a massive vibration which is very noticeable at 55 or 65. If not, then you should also try a wheel balancing. Try rotating the front to rears and see if it helps.
Edit. How many miles on the tires and how old are the tires?
Last edited by Tony2005; 10/04/05 05:57 PM.
