Well, as far as I know. If the pj isn't throwing any codes then its not going into backup mode. The hard steering is because you don't have power steering on this particular pj. In theory you can probably add it on. I've seen first hand a Toyota pj with and without power steering. It doesn't seem to labor intensive. Regarding the wheels, to my understanding all wheels are round...the type of compound used (color) makes a difference too.