I ran the whole thing yesterday, we went east to west. I am on 33's with a 4 inch lift and open front and rear. I did not have any difficulties, a couple sections I had to make a couple runs at, and even most of these had another way around. There were also a few areas with multiple lines, and some of those lines there was no way my Jeep was making it through. I went with a IFS Tacoma with I think a 2 inch lift and 33's(it sits about the same as my Jeep) his wheel base helped in some areas where I was lifting a tire he was still good.
The west end of the trail is a little harder than the rest of the trail, we were doing that part all down hill though which made it easier. It is also a lot tighter than the rest of the trail, the Tacoma is an extended cab with a regular bed on it and he was using his rear tire to pivot around a couple trees. No body damage but definitely tight. My Jeep had no issue with the tighter parts. We both clipped our mirrors on a tree or log at one point but both times were driver error/lack of awareness.
I don't see any reason 31's and a 2 inch lift would not make the trail.
Here are some videos from yesterday, I am by no means an experienced off roader. For some reason they only uploaded in 240p, so excuse the quality.
This was the most difficulty I had, and this one was unavoidable, the Tacoma went right up it. Has some language at 0:04 and 0:20. Not a tire size issue, just grip/flex issue. The hill is a lot steeper than it looks in the video.
This one tripped me up a little, again the Tacoma went right up it, the noise is his back tire rubbing on the fender. As you can see to the right there is an easy way not that this way was hard.
This one flexed me out pretty good
And here is a little mud hole we found, the Tacoma had a little trouble with this one and almost got stuck, which is why the end of the video ends with a uh? To the right of this was pretty much a flat road.
