Originally Posted by handbuilder
TH has a beefier frame than other models. At the time we bought ours, we noted there wasnt enough clearance in the other trailer models' wheel wells to allow larger tires. I havent heard of anyone (yet) lifting theirs. As Lee (thehamguy) pointed out on the "off road" thread, he's traveled thousands of miles and the memorabley challenging Alaskan road "he shall not name" with no problems with his 13" tires. Maybe he or his DW will chime in their input on how their tires did on the rough roads...
They did fine, in fact they have over 17,000 miles on them and they still look good. We took two new spare tire/wheel combos with us on our Canada/Alaska trip, knowing that some of the roads we took are famous for destroying tires, and came home with them still not having touched the ground. Ours are the much-denigrated Chinese tires, on 13" wheels, load range D, kept inflated to the recommended 65#. We've been lucky.
I think the ground clearance with the 13" tires is fine. We were on roads that were badly torn up and extremely bumpy. Potholes like swimming pools. We never bottomed out, nor scraped our undercarriage. We also didn't travel above 20 mph on those sections.