So I got measured at my LBS and my crank length should be 170. Pretty soon I'd like to get a track frame (mainly for street use but maybe one day I'll be in shape enough to race?) and 165 seems to be the preferred size. Now has this come about as a remedy for conversions to have less a chance of pedal strike? Should I get 165's or will the increased bottom bracket height on a track frame compensate for the risk of pedal strike and allow me to safely run 170s?