Originally Posted by
crazyb
2.5mm=0.098425" Not really as big a deal as some would make it out to be.
It can be if you have bad knees. I don't have full range of motion in my R knee, and the difference between 170 & 165 is simply amazing.
Since you raise the seat up 2.5mm, the bottom pedal is 5mm further away.
One can do too much of a "good thing" however. My cadence actually slowed a couple RPM when I went to 160's.