If this XJ just for on road? Will it go off road?
I think that tire size and rim size would be miserable on road and worse off road. Don't buy them. I wouldn't run that on an XJ, TJ, LJ, YJ even if the wheels and tires were free. They aren't appropriate for a Jeep, neither in looks nor functionality.
You can ignore my advice at your peril, but if you get those for your XJ, you will regret as soon as your first drive.
I'm not trying to be a jerk. I'm just telling you the honest true facts.
Run away screaming from those wheels and tires while you still can.