I've been trying to figure that out too. From what I've seen experimenting with the Rancher, off road tires only work well literally off road. I mean no trails, nothing with hard ground. I was able to traverse any trail easier with SUV tires than stock or off road. What I would do is drive the Rancher up Chilliad, drive it back down, change the tires and go again. The Rancher seemed to pull up hills much easier with SUV tires. Off trail, like I said off road tires worked best. After finding this out I changed the tires on my Sandking to SUV tires and it does better on trails now too.