Weird body problem
 

On my Supra the gear side's tire is insanely close to the edge of the well but is fine on the other side. This is only in the back. I found out my rear body mount is cracked as well. Could this be part of the problem?

The gear side wheel is close because of the gear. when I do my wheel mods, I shave the backspacer off so the wheel sits inward of the chassis, clearing the body.
As far as the body mount cracking, did you hit anything? I doubt the wheel caused it. You would have to put a great deal of pressure on the tab to break it. (like someone stepping on it)