Saccy, you need to keep a few spares lying around. Even the crappiest crap bike shop 1/2 price special tire would be golden to you right now. But I feel your pain, as I may have to wait for a crank arm to ride the tandem again. Oh, I saw a 486 and was rather impressed. I may have to stop giving you heaps about yours. Hmmmm. Not likely, but good luck with the new chook.