Pretty much all my life I've been on cranks of 160 to 165 mm. I'm 71" tall with 34.5" inseam. The few times I've tried longer cranks such as 172.5 or even just 170 mm, I didn't like them. And I gave them several months to win me over, but they didn't. And those attempts where in the last 10 years. 165mm seems to do me just fine.
If you spin a high cadence, you might like the shorter cranks. Or you might not. If you like to mash your way up hills and otherwise tend to ride where 75 rpm is about your max comfortable rpm, then you might not care for them.
Last edited by Iride01; 05-16-23 at 09:23 AM.