Another thought -

Tires that have a few miles on them are MUCH easier to mount than brand new tires. So, if you're out in the middle of nowhere & you need to replace a tube, you'll probably be OK. In the meantime, I really recommend that anybody who has tire-mount-phobia practice in their living room. With the back tire. You need to know how to move the gearing out of the way to get the tire off. You KNOW that when you need to change out a tire, it will be the back tire and it will be pouring rain...