Hello there: just joined and do not know where to post my question. Just picked-up a Continental w/ 27 inch s-6 tires for $50.00 at a thrift store. Bike shop says they do not make these tires any more and that I would have to buy new wheels as well. Perused the archives and the 'net and could not find a definitive answer. The old bike is a beauty. Cables and gears seem fine, and although it's a bit large for me, I want to ride it if I can so without spending a lot. If not I can take it back to the thrift store. TIA!