A High Lift fits under the passenger seat and all you have to do is pop the lower rear seat base in and out. That keeps the weight low. For a tire I needed a 35" spare. Super Swamper makes a TSL 34x9.50x15 that is as tall as a 35 when aired all the way up so it will work as a spare for 33"-35" tires. That tire on a stockish rim is the tallest tire that will fit in the rear of an XJ while allowing the rear seat to be up and hatch closed. Again weight is low and centralized. I eat up some space (10" of the rear floor space) but gain easy access into the rear. Those heavy racks with a tire and jack puts a lot of weight up high and the tail wags the Jeep. Gas cans are for looks but I need them for the boat or dirt bikes I use so I toss a Scepter mill spec can in the back. They flat do not leak a single fume even in the AZ heat or Colorado altitude so are safe enough to use as a pillow. Of course if you think a heavy contraption that hangs up on the trail is needed for looks then diminish your center of gravity, your ability to see out the rear window, your departure angle, the handling, wind profile with a rack that screams " I'm an off roader".
Edit: I forgot to address your need for a reciever hitch. The rear unibody of an XJ flexes and can crack even more if you pull from a bumper. A regular receiver is much better because the unibody has factory mounting provisions along side of the gas tank instead of the bumper mounts. A receiver or bumper that ties into these points adds a lot of rigidity weather you tow or not especially with a rack. Basically make sure all the weight of that rack and the hitch is not just swinging on the bumper mounts. Use the factory tie ins for a receiver no matter which you go.
Last edited by Stumpalump; 06-24-2012 at 04:34 PM.
New River, Arizona
Congratulations, you've won the award for worst possible person who's posted on Expo.