Quote Originally Posted by Bethany1 View Post
Thanks for the websites. According to the rivbike site I need wider tires at 200-235 lbs. Mine are 23x700 and it recommends 28-32mm.

Any thoughts? And is that why I feel so unstable on my Madone? Wider tires feel safer but they don't feel fast.

If I go wider, any reccomendations on tires?
Depends on whats the widest tire your bike will safely take. I tried running 28x700 tires, but my Ruby wouldn't take anything larger then a 25. Im about your size too, just run close @100-110 psi to prevent pinch flats.