Well, I currently wheel my 1st gen. mostly on rocks ( hard to find in Fla. but a quick trip to the mountians solves that problem )
I cannot really say about the wheeling abilities of the other years.
I have either owned or currently owned 1st, 2nd & 3rd gens.
I find myself driving the 1st gen. most of the time. I like the "wind in my hair" feel, hence the screen name
and I have a choice of driving any one of 6 vehicles....
67 Impala convertible, 79 El Camino, 87 4Runner, 92 Stanza, 95 T100, 97 4Runner.
Not to mention the company truck....
That may change if I get that 99 4x4 limited supercharged 4Runner I have my eye on....