How should I know? But I imagine with the popularity of the radwagon4, they would get this out of the way quicker if they could and continue selling them. I think they used some weird/rare type of tire - there's talk in radwagon forums of replacing the tires with "moped tires", but I never looked into it. But if this was just a case of sending people to their local bike mechanic who would take a new tire off the wall, I'm sure they would do that, since their process has you going to a mechanic(eventually) anyway once the new tires are in.