Hello from Colorado, where my car is buried under a foot of snow, and my bike is married to the trainer…
I am researching the various aero helmets for use in a half ironman later this year. Given the 56 mile ride, it figures that going with one of the more goony designs might be worth it. There seem to be loads of good options to pick from, here are “a few” I am considering: Giro Aerohead, Louis Garneau P-09, Kask Mistral, Specialized S-Works TT, Smith Podium TT, Kask Bambino Pro TT, Oakley Aro 7, Giro vanquish, Rudy Project Wing57.
The issue(s): 1) I don’t know anywhere that sells these, so that I could try them on for fit and comfort, and 2) while you can Google reviews and “best of” for these helmets, virtually none of these articles answer the very question that these products aim to solve: which one is the most aerodynamic, or the fastest?
Question: does any manufacturer or third part publish their wind tunnel data on aero helmets, or is there some side-by-side comparison I can find that would allow me to make an informed decision? Sort of thinking like a bicyclerollingresistance.com that would show the watts savings/loss, but for aero helmets and gear.
I won’t discount objective safety data, and features such as MIPS which I believe are very important, but for this discussion, I’m really just interested in what helmet is the fastest.