It is all a load of crap, the same 190cm dimension is being used for bikes, skis, surfboards etc. It is all to down with the length of the machines and corners.

While 190 is way to long for bikes it is too short for others but the width is too short for bikes and way to big for others.

This is p!ss all to do with weight or cubic size just a crap idea of how to measure items.