I'm curious... when you take the front wheels off exposing the hubs you notice hub covers secured with 6 large allen bolts. The shape of those covers is that of a cone.

If you take it off you notice that there really isn't any purpose for it to be cone-shaped, is there? Was this just a re-use from other model lines or is there actually a reason why the front hub covers couldn't be just a regular flat cover..

Ideas?