My mountain bicycle was originally equipped with 1.95X26" tires. I decided to try these tires since I ride only on pavement. Everything was fine when I received the tires so I went ahead and installed them. Because the sidewalls are very thin they expand more than regular tires. Consequently, the tires end up being too wide for my bike when inflated. I tried them on my sister's bike and had the same problem. I switched back to the original tires and no more problems. The sidewalls on the tires are so thin they are very easily punctured. Unfortunately, I cannot recommend these tires.