Look online & there are plenty of 27" tires available. BUT, you are right, fewer 27" x 1". I have plenty 1 1/4 ". Most I have seen are the more inexpensive grade tires, though. Panaracers are good. I believe these tires will be around a long time due to the increase in old bike owners pulling these bikes out of the closets. Same with the Schwinn specific [ S-6 ] 26 x 1 3/8 tires. I have a buttload of both.