I have the original version of the saw (it was modified several months after initially going on sale). But I have no idea how to remove either wheel. Hopefully you'll tell me when you find out.
When I changed the tires on my previous bandsaw it was with the wheels mounted. I found it a royal pita, so maybe taking the wheels off would make it easier.
Currious why you need to change tires already? You must put a lot of "miles" on your saw.
I think it is pretty good, but more than that it is kind of a family thing. My mom's uncle grew popcorn, thousands of acres of the stuff and sold the crop to Jolly Time.