Off Roading With 1990 Xplorer ~ Any Experience With This?

A lift and some bigger tires couldn't hurt for dirt roads but you can get into trouble with the rear overhang. A locking rear differential is highly recomended otherwise one drive tire will spin and the other will not in certain circumstances thereby making your 2x4 into a 1x4. I'm very selective about which dirt roads I travel down after giving myself a little scare last summer and my van is shorter and lighter than yours. Sportsmobileforum.com is a great place to find out about off-roading in a van. Good luck.