A guy I have ridden with found out that his freind has a set of sugino 75 cranks and a bottom bracket he is willing to sell cheap and I am interested in getting them, the only issue is they are 170mm instead of 175mm which is what I ride with right now. I would just try riding his bike except he lives on the other side of the country so thats no good. I was wondering if anyone could tell me how that difference in size would affect my ride? I don't have acess to test it out myself which I assume is the best way, but like I said, no dice.

Basically I want to know what the general consensus is, wether or not the cranks would work for me for daily riding.

Thanks in advanced.