[busterbrown]

I think mitigation of a tire blowout is the better solution than a response to a blowout. The OEM rubber that came on his coach has a poor reputation. They're referred to as "China bombs" for a reason. There are much better brands in the marketplace that RV'ers choose over those that the manufacturer's mount on the axles. With that said, going up on the load rating of the his tire size is another way to provide a safe towing experience.

$500 dollars spent on new set of quality tires with a higher load rating is better insurance over fabricating a stiffer wheel well. YMMV.