I have a 1987 dahon folding bike, it has spent virtually its entire life in its Dahon specific storage bag, and it has the original tires which have no cracks and are still plenty supple, its rather amazing really. I've ridden several half centuries on the bike and a metric century on it with the original tires, that was about 18 months ago.
On the higest terrestrial point of Manhattan,
Close up of the steel chain ring and folding crank, I don't have a close up of the tires handy though.
Poppin' a wheelie on Randalls and Wards island during my metric century,