Araya 27x1 rims are the ones on this bike as well. You are able to mount and ride 27x1.25's on them? Perhaps there is hope after all! My main concern is that I might be able to buy 27x1 or 27x1.125 tires today, but what about 5 years from now? The 27x1.25's will probably be available for years to come, however.