I have the GUIDE TO ARIZONA BACKROADS & 4-WHEEL DRIVE TRAILS book and there are one or two "easy" trails on the south side. My brother is borrowing the book so I cant say for sure. http://www.funtreks.com/index.php?ma...=contents#tabs
I can get it from him and scan you the pages for the south rim, just PM me.
The other day when we were talking about books of trails in socal. both of those guys make books for Arizona.