On my GenII, I just had 4 new Toyo Open County A/T tires installed. These tires ROCK! <img src="/forums/images/graemlins/lol.gif" alt="" /> The are OE size, they look like monster truck tread depth - but are quiet as a touring tire on the highway. Cant wait to try them out in the snow this winter (unfortunately these are NO places near me to do any serious off-roading) I highly recommend these tires. I found this link which will tell you all about them....
Toyo Review

-Aaron
1995 SR all stock