When I was doing this, I spoke with a lot of guys from down under about their trailers and what type of obstacles they ran into normally. Washboard, water crossings, but really nothing what hard core trails are in our southwest. I pulled mine through carvacre and showed them a video of about 30 seconds of 2.5 hour out and back. Every single one said they would never find a trail like that nor would they tow through it.
https://www.youtube.com/watch?v=vpsy1161R8Q
There were 22 trucks on this run, and not a one thought the trailer would make it a mile, two owners of a major brand,, that stated they would never take their trailers on this trail. It made the whole trail, but did suffer a flat on the truck. This is what I built my trailers to do, I would not drag a tandem axle on it for any reason, and I have built trailer for a whole lot of my 68 years.
As Switawi says, it depends on what you are doing and your area I think. East coast trails that I have seen are narrower, tree lined, muddy, there for a little narrower trailer taller tires seem to be what I would want. Out here we have sharp rocks, drops twits, over hangs and a host of other things included.
Switawi, I got into another hobby, the wife hated the trailer camping. Marriotts are here idea of roughing it. She never wanted to go, and after 47 years you become kind of joined at the hip it seems. I could understand not wanting to go, but found I actually missed being around her. We were headed to the 2013 FJ Summitand she said she making reservations at the hotel. Was done staying in the tear drop, which I actually built for her. So I stopped building them, sold my personal one and bought a sports car. Now we go to rod runs, car cruises and National events for them. Still hit the FJ Summit every year, and absolutely still love the truck, but a happy wife is a happy life. Plus no deadlines to build something no one else builds and make a million changes before it is delivered. lol
I read these builds regularly though. Still for some reason people seem to think the front of the trailer is the place to put everything. I miss mine, but it is being drug all over the east coast and Missouri. Talk to all the owners still, and no structural failures, but man the TV's pop.