Originally Posted by
Thetank
just try to aim for the 70 GI that seems to be the most middle ground for speed/climbing. I used to ride a 48x17 and although that was a more controlled descent on steep hills I would much rather not kill my bad knee and use a much lower gearing which is now a 44x18.
werd. im rolling on 40x15 and 48x18 on my two fixed bikes. they are the same gear inches iirc