I'm in Memphis now and have lived in central southern tn. Try riding down by the ocoee river area if you are looking for some 4x4 action. Beautiful area. My brother is in Knoxville and we sometimes go camping up near cades cove in the smokies which is also beautiful...I have a 2wd so I don't do much offroading! Sounds awesome though.
I live north of Nashville and there isn't too many places to do anything. I'm wanting to do some off roading. Mine isn't lifted or anything special but I like to go off road and have alittle fun