True, my bike's fork and frame were designed for 2+" tires, it came with 2" knobbies and I rode it with 2" slicks when I had it on the bike paths, potholes and cobblestone streets of Alexandria, VA (Washington DC area). I replaced the 2" slicks with the 1.5" tires because I expected them to be faster -- not really. I'm going back to comfort on broken streets; the Serfas Drifter is high on my list.