Thanks for the reply Denise! I just installed the stelvios in 23mm width, 24" front and 700c rear. Funny, but they look nothing like the stelvios I used to have on my bike friday pocket rocket pro before it was stolen. They look like a totally different tire. They look great, but I think I will keep them off my commute, at least until I see how they handle on the open road. The max pressure is 145. I inflated them to 140, although I am used to riding tires w a max of 115 so I have no idea how its gonna feel. I riead the tire inflation thread suggesting that lower pressure is better, but higher pressure reduces rolling resistance and thereby increases speed, so I'll have to play around with that. Any suggestions on tire pressure are welcome.