Originally Posted by
icemilkcoffee
Yeah I can never understand that part. They want to ensure the bicycles are production bicycles that regular people can buy, but somehow the tires are allowed to be special one-off 'prototype' tires.
I think prototypes are allowed, and they're often available to the general public (if you have the scratch) later that year or next year. E.g. 12 speed Dura Ace, VIttoria Corsa Pro tires, etc.