The last few months I've noticed a vibration in my '02 X-cab at about 40 MPH and up. I needed new tires anyway so I put a set of Michelins on thinking it would fix the vibration, still have it. So I had the tires Road Force Balanced. Still have the vibration. I see Ford had a TSB 02-21-11 for harsh ride at highway speeds for 4X2 models, anyone had this TSB done? Thanks,
Paul