Changed my first tire this morning. It only took about 90 minutes. In reality, it wasn't much harder than doing bicycle tires. The tools and techniques are the same.
I got 3300 miles out of the stock rear tire. The replacement is a Dunlop D606. The front still has some life, so I'm going to leave it for now. I'm kinda frugal.
Before and after:
Using the other tire as a work surface made it easy:
A floor jack helped to hold the tire and get it back into place: