I run the 31-10.5-15 OTR on my 96, the traction is awsome. I ran them all last year at 20 psi, that is all the lower I had to go to walk through snow, mud wet rocks on the trail and wet and snow and icey pavement. As far as lasting I have about 15000 on them and still have about half of the original tread. Most of that mileage was on the highway. I have'nt been able to go wheeling since the snow melted to see how they perform with less tread. Search youtube for Evans Creek WA to see the terrain I'm talking about.