I know this is the place for advice so maybe you guys can help me out. Last week I took my 2000 XLS up to Atlanta. This was the first time I took my X on a long road trip and had it up to 60+ mph. I only have 5000 miles on it so it's in great condition. On the way up there I was getting a heavy vibration throughout the whole vehicle. I took it too a Ford dealer up there and I told them about the problem. They decided to go ahead and change out my Firestones and put on some new Good/Years. I was excited, The dealer down in Florida said it would be months before the replacement tires would even show up. Now I don't have to pay for anything, I get free tires and a wheel balance. Well on the drive back to Florida, I noticed the vibration was still there. Not as bad as before but still just as annoying. The next day I took the X to my local dealer and explained to them what was up. They suspected the Atlanta dealer didn't do a good job on the tire balance, so they redid the whole process once again. This time I was able to watch them check each tire and rim when they had it on the machine. Well guess what, two tires where out of balance. I guess the Atlanta shop screwed up. The tech rebalanced everything and I was good to go, so I thought. With new balanced tires installed, it was time for a road test. Just a few miles from here is a newly repaved highway to test their work on. Well guess what. I'm still getting a vibration starting at around 60 mph. The X runs silky smooth below that. I can see and fell the vibrations in the gas pedal, steering wheel, and in the seats. It's not as bad as before but still the vibs in the pedal and steering wheel can get tiring. I'm taking my X back to the shop on Monday so they can hook up some device too it and road test it. Can you guys come up with a list of items for me, so I can give it too the dealer and have them check it out.