We have a 2008 Lance 845 ... We pack fairly light, but still run about 3000 lbs loaded. We haul it on a Chevy 2500HD w-60K miles on it and the only mod is Bilstein shocks. Never have an issue, highway or off-highway, although, we don't off-road much anymore.
BFG 285 AT 'E' Tires ...
Not sure why anyone beefs up a truck so much unless you have trouble hauling the weight you carry. Yes, safety is always an issue, and if it felt unsafe, we would beef it up. It doesn't. Could trucks hauling TC's use a few 'beefs', sure, but not always necessary. Driver training and driving care is always helpful if you need it.