I run the same size tire but in Goodyear. I am running the truck version, G647, instead of the RV version, G670, mainly because of a blowout and the G647 was what the tire place had when they came and replaced it roadside. I replaced the other tires with the same as a result. The coach had RV tires on it when we bought it used, and I honestly can't tell any difference in the ride between them and the truck tires. The only real difference I've read about is reinforcement in the sidewalls for the truck tires due to anticipated curb-scuffing on delivery trucks. The RV tires are supposed to have a better UV-protectant compound to help reduce the effects of sunshine because RVs sit more than they travel.
