Symptoms:

This 97 Ford F350 Super Duty truck has extreme vibration when you hit a bump. A front-end alignment check was done on the truck and the front wheel bearings were found to be loose. It was cleaned repacked with fresh grease and tightened up. The front shocks were worn and replaced. All the other front-end components like tie rods, ball joints were found to be within limits. The tires were also checked and rebalanced. After doing all of these, it did not fix the problem. I have invested a lot of time and money on this and I am going out of my wits! Please help!

Tire Problem Advisor:

There are 3 areas that can cause this problem which you can check:

Defective tires; try swapping a good working set of tires from a known truck without vibration and road test it. If it does not change the vibration it proves that the tires were OK.

Check the front-end parts for possible hidden worn parts.

Check the track bar from the truck frame to the front axle. Pay particular attention to the track bar bushings and test it for wear by prying it.

Notes:

The track bar bushing is a common fault found by a lot of front alignment garages.

Ford suggests torquing your tire wheels bolts during installation. These will help prevent vibration and distortion of the tire wheels.

When in doubt and as a last resort bring your vehicle to authorized Ford dealer shop to resolve this tire problem.