
Originally Posted by
Sky King
ok, I just have to chime in. Just got back from riding 35 miles on my 650B X 2 inch Grand Bois Hetre's - average speed just under 16mph on my all steel touring bike (unloaded), no tailwind, no drafting. I am an average 56 year old bike rider.
HUGE smile on my face. Our roads are all chip seal. I can't imagine riding a 23cm tire, ever. Even the pro's ride at least a 25cm and sometimes a 28cm in road races.
For me, comfort, no pinch flats, no getting bucked off at the slightest bump or pot hole.
I hope you decide on at least a 25cm and hopefully a 28cm.
Feel free to go read the Schwalbe website about speed and tire width and rolling resistance. OH and go have fun

I would like to get 25s for my Madone that also has 650 wheels. But I can't seem to find the Continental GP4000s in that size, only the 23s. Any other good tires to recommend?
(If you are average I am very below average. Which I guess I am for a rider that rides quite a bit.)
Trek Madone 4.7 WSD
Cannondale Quick4
1969 Schwinn Collegiate, original owner
Terry Classic
Richard Feynman: “The first principle is that you must not fool yourself and you are the easiest person to fool.”