Do you carry a spare tire?

I carry an unmounted 22.5 spare in a bay. This started with a trip to Mexico where I was concerned about finding a spare. I took the spare my friend with a similar RV took the serpentine belt. In your class C, I suspect you have 19.5 tires, which are much easier to find on the road. If you had a blowout you could get a "truck" tire for short term replacement. Short term because the ride is definitely not as smooth, I tried once and ended up trading out the tires. Guess it depends on your budget. If you can handle the purchase of a new tire on short notice, and you are short of space, you probably can get away without a spare.