Heh. In all reality, I've actually wondered if breaking in such small motors was really that beneficial. I just made this suggestion because I have bit racer chassis' lying around uselessly.
Breaking in motors might be a way of creating a smooth surface on the armatures or brushes or what have you. But given the size of these motors, they're most likely built with more precise specifications. I guess I should have stuffed a disclaimer on the post. Especially since motors like the BitMOD brand have been listed as only being good for a mere 85 minutes of totally reliable runtime.
Thanks for pointing out something that I actually believe myself strider (the wear and tear). I was just happy to find a use for my chassis. Now if i can only make their cheesy suspension bar useful....