I had a problem with mine always tracking to one side and had tire wear on the left front......
went in to do a rotation and replace one rear tire...because it went bad ......
I ended up replacing both front tire and rotating the rears.....
I thought I was going to need a alignment but once this was done the tracking went away and everything is wearing fine now.....but....I also put the new shocks on it....
I also had a bad wobble when I would first put it on the interstate and I would have to get out of the gas let it settle down and then get back in it ...this has also gone away......
we are thinking it was a combination of the shocks going out and the tire wearing because of it,...once both were fixed mine has given no problems and everything has gone back to normal........
mine has hit almost 79000