Originally Posted by Sharpshin

I have always used what the bike came with, 170 mm cranks. Seemed logical,; I'm only 5'6" with a 30" inseam.

Just recently I ungraded to 175mm cranks, wondering here why I didn't do this a long time ago. I'm not a high speed rider who "spins", I just mosey along ~10mph, especially on tour.