Hey folks. I have the Harbor Freight tire changer with motorcycle attachment. Some observations:
1 - The bead breaker is part of the base tire changer. In most cases it will not reach the bead of the motorcycle tire in the attachment. I end up breaking the beads with tire irons.
2 - The tire tool that comes with the base unit doesn't do a great job. I end up using regular old tire irons. It is very long though, so it did come in useful for knocking down a wasps nest.
3 - The clamps that hold the rim are steel with sharp edges. Could easily mar a wheel. I ended up covering them with electrical tape.
Bottom line, the one I made myself from an old truck wheel and some threaded rod using a design I found on the web works just as well and cost over $100 less. Downside to this one is it will only work for alloy wheels. Harbor Freight model will do either.
