Look KG251 road bike 61cm Campag Daytona Mavic CXP30 THREAD CLOSED

Thanks for your interest, but to answer your question, I really don't think my height could be of much help to you as I've explained in bike description that it's frame size is noticeably too big for my height, although perhaps you've overlooked this? It's this fact which is the central reason behind my selling the bike. However, I'll tell you that I'm 5'8" and usually am comfortable with a 58cm frame for my bikes. I might suggest that instead of going by this size guide, instead you could look up general info on the Internet, Google or YouTube etc, which would give him a better idea IMO. But if your height is in the general ballpark size suitable for the frame, then you can always test ride it and check that way how you feel on the bike, as this is often the best way to ensure precisely correct fit/comfort.