Originally Posted by
boostbutt
I switched from 170mm to 172.5mm cranks though, but it shouldn't make a difference (right?).
wrong.
you're 5'11" and were riding a 53.5 cm frame? that's crazy! i'm also 5'11" (with long legs and a short torso) and my frames all have a 55.5 or 56 cm top tube