I did buy a bottle jack when I got my first motor home. It had 19.5 wheels and I was 10 years younger. I also carried a spare tire mounted and jack stands. Watched a video about changing a tire and using a jack stand as a lever under a wrench on a long pipe. I was ready :)
When I got the Sahara (22.5 wheels), I got new tires as soon as I picked it up and kept one of the old (unmounted) tires in the basement for a spare. I also joined Coach-Net.
Finally threw out the spare last year. At almost 70, I won't be changing any tires.
