ragdogs, I see that you have a 2002 Itasca 24V. We have a 2005 Itasca 24V.
I recommend for your Class C -
either a set of these Load Range E tires:
https://shop.michelinman.com/tire/michelin/ltx-m-s2/225-75-r16-115-r?fromResultList=searchEngineByDim&zipCode=or a set of these Load Range E tires:
https://shop.michelinman.com/tire/michelin/defender-ltx-m-s/225-75-r16-115-r?fromResultList=searchEngineByDim&zipCode=Use whichever of the two Michelin tire types that you can get the best $$$ deal on. We currently are running the Defender LTX MS tires on our 24V in a size larger than stock so as to get a bit more ground clearance, as we occasionally take it off-highway.