When we traveled in the outback with our jeeps for many years we carried a tire repairs kit and air compressor. We could actually repair most tires, at least long enough to get back to a tire service shop for permanent repairs. Not sure how tire repairs would go on a class C motorhome, but depending on the tire damage or puncture it might just be handy to have a kit. It also seems possible that you could get a mount for a rear bumper to mount a spare too. In addition, I have even seen spares mounted to RV rooftop.