I would like to thank people for responding to my initial Tires question. When I originally weighed my 32' Cambria I was within 300# of maxing out the rv rear end. Tanks and the large rear storage com...
If you are that close to the limits, I'd think it's a good idea to up the load range if you can. It's one thing to overload an axle or GVWR. It's another to overload a tire. IMO.
Can't say about the harsher ride, but it would be a fair trade off to me.
On the other hand, thousands of 30+ foot Class C's roll down the road every year overloaded and don't explode, so you've got that going for you.