So, we got a new tire changer for our high school auto shop. Tried it out today and probably ruin a tire. It was a 17" wheel with a 65 aspect ratio. Not ridiculously low profile. When we went to put the last lip of the tire on to the rim it was just stop rotating and getting stuck. Eventually we tore the bead from it continuing to jam. We used plenty of lubrication. Ideas? We may have a Les Schwab guy come out to help.