i suspect all the attention has been focused on the front. i suggest you have a look at the rear suspension parts. including, especially, the trailing links (arms). inspect to make sure one or both are not bent (when they shouldn't be) and that there is no cracks in them. do it jacked up as on the ground the defect can be masked by the position of the deforming metal.

on my 1992 trooper: i had longstanding steering pull to one side that i figured i would eventually get resolved with a front end alignment. i had classic front end alignment needed tire wear patterns. i had a knot in my shoulder from having to constantly pull down on the steering wheel to run straight.

one day after a weird skating feeling, i came to a screeching rear tire burning halt. the left rear trailing arm had broken clear through at a flex bend, which apparently had been going on for some time.

replacing both trailing arms solved that "front" end alignment problem, and the front tire wear returned to normal. i did not have rear tire problems.

anyway, take a look. that surprise panic stop apparently was caused by the now twisting axle engaging the emergency brake cables at one side and was no fun at all. while i did not have any noticeable vibration, i can imagine some tires could respond that way as they wear abnomally.

//bc