The only problem encountered in getting the wheels assembled was seating the tire beads. This was accomplished only after getting down in the floor with the wheels and doing some 'splainin' to the wheels with rather stern language. The trick is to get one bead seated on the rim, then the tire can be inflated. Instructions are included but it takes some serious grunt work to get the first bead seated. There is a video on this website that show a simple trick to mount these tires in less then 1 miunute
The narrow tires take on a new personality when mounted on the wide wheels. I intend to run a minimal amount of pressure--the tires will be the only means of shock absorption in my version of the XL gear.