Originally Posted by Retro Grouch
Sometimes a crankset will recommend spindle length as "110/113mm." If that's the case, measure the distance between your frame's rear dropouts. If the distance between the rear dropouts is 130mm, use a 110mm spindle length. If the distance between the rear dropouts is 135mm, use a 113mm spindle length.
Since this type spec is typically seen with mtb cranks,and current mtb rear spacing is 135, I think seattube diameter rules. Use the longer with 11/4' and 13/8" seattubes.