I'm pretty convinced that the safety of the G tire itself pays for itself. Regardless of load, I'm not looking forward to having tire failures. Ok flats happen and a TPMS would also be on my wish list. My whole point of this post was to point out that if your going to go to the trouble of an upgrade, what would most of you do? I did some measuring and a slight lift will be necessary to accommodate the larger profile but I already was prepared for suspension upgrades. I am building this RV from the frame up so this is where we start.. where the rubber meets the road.