Forgot to add that your tires are about 38" in diameter and will weigh 150 lbs on an aluminum rim. Crawl under and measure to see if a spare will fit and what will have to be moved/modified to make it fit. I didn't trust the hoist to hold the tire or discourage theft - but the spec said it would hold it. So I have both "belt and suspenders" with a a good lock. If it ever got out of there when on the road, someone would own your house.
You will still need roadside service to change a tire or move a tire off the spare rim to the rim that needs it. Lugs require 450 foot-pounds of torque. Carrying everything you will need probably isn't practical.