monkeypony said:Do helmets make you faster?
If not, why do the pros wear them?
They do everything possible to save weight so I can only assume that a standard road helmet makes your head more aero than no helmet at all.
Or do they believe that a helmet will protect their heads in the event of an accident and is therefore worth the extra weight?
Have they all been conned by the manufacturers?
The UCI made it a requirement to wear them, before this came into effect the use was sporadic at best. I have yet to see any research that has studied head accident rates amongst competetive cyclists from before and after the ruling came into place.
For some events (e.g. TT) the use of an aero helmet may decrease drag.