I have been gravitating toward larger tires on my road bike - going from 23s to 25's, and I've just ordered some 28's. I've been generally trying to use the smallest tube for a given tire. Does anyone know if I can use a tube rated for 18-25mm on a 28? All tires and tubes in question are Contis (tires are Ultra 2000).
Also, I'm a bit concerned with tire clearance on my bike frames. I don't have much with 25's right now (tire to seat tube in back and tire to fork), and in theory, the 28's should have a larger diameter. I guess I'll find out for sure when I get the tires, but I was wondering if this diameter varies a lot (I would have to think it does vary some).
Also, I'm a bit concerned with tire clearance on my bike frames. I don't have much with 25's right now (tire to seat tube in back and tire to fork), and in theory, the 28's should have a larger diameter. I guess I'll find out for sure when I get the tires, but I was wondering if this diameter varies a lot (I would have to think it does vary some).