The big problem with no spare on the bigger rigs is the availability of replacement tires. My signature rig came with a complete spare wheel, mounted underneath the LPG comparment. It's one of the original 2001 Goodyears, so I'm not planning to go very far or very fast if I have to have it installed. I just hope there's a Les Schwab store within reach if I do have a flat, as they cover all road hazards for free when you buy their tires.
At 69, I'm not going to start horsing one of those things around, but if I get a flat way our in the boonies somewhere, all the road service provider needs is a big enough torque wrench and a big enough jack.
There are many posts on iRV2 and RV.net from people who were stranded in some small town for two or three days waitning for a replacement tire to arrive.
Frank and Eileen
No longer RVers or FR owners