Here's what someone on another forum said regarding which Jeep wheels fit on a KJ:
Here is some info I stated on an earlier post regarding various Jeep wheels that fit on the Liberty.
Remember you have a 5 on 4.5" bolt pattern. They include wheels from the Wrangler, Cherokee and the ZJ Grand(93-98). The Liberty takes at least a 16" wheel. You may run into brake gap tolerances between the rim and the brake caliper if you try to install a 15" wheel. The only Wrangler wheel that would fit would be from the Rubicon Moab (16x8) or the Ultra Star (16x7) that was used on the 00 and 01 Sahara.
There was also a couple of Cherokee wheels, the Icon from 2000 and the Ultra Star from 2001 that were 16" and would fit.
I put a set of ZJ Grand Cherokee (93-98) 16" wheels called Luxury on my daughters 02 with no problems.
The WJ Grand (99-04) switched to a 5 on 5" bolt pattern along with the new Grands and Commanders.
They won't work.