Continuing the discussion. Our Itasca came with a spare. It was stored in a compartment at 'floor level' under the rear bed. Access was on the driver or street side. Getting the spare out, Easy. Gravity assist! Putting the dead tire back? Nearly impossible. Solution? Built a carrier that fits into the upper receiver on the hitch adapter, made an extension to add height and packed a small come-along, I can lower the tire to the ground and pick the dead one up. A side benefit is that I now have a large storage compartment that fits all mu cable and hoses (except sewer) in plastic bins. Also where the Come-along and extension are stored.
I may never have another blowout or flat, and if I do, I might be in a civilized location, but just in case, I am prepared.