They have a backspacing of 4.5". So far no rubbing, but I have not taken them offroad yet. At full stuff and full turn, they may rub. My 255s with a back spacing of 4.63" did rub ever so slightly, but it took a lot to make it happen.
I installed the XJ hub caps today. Also, I used black lugs on one tire and silver on another to try and see which I liked better. They both look nice, just different takes.
This is the spare. I have the black lug nuts on and the MOPAR bike carrier bracket. I used the same DupliColor HWP104 on the bracket. Since I run without the actual bike carrier most of the time, I wanted the exposed bracket to match.
Just finished our Black Hills trip and put just over 2,600 miles on my new KO2s. I had them on for about a month before the trip. Very pleased with the on road manners and noticed no road noise. For the muddy situations we were in it seemed to me that the staggered side lugs of the new sidewall did improve mud traction although it is still a long way from a mud terrain tire. All in all I'm a fan of the tire and look forward to seeing how they continue to do.