Originally Posted by
refthimos
This is simply false. True aero wheels ARE faster at sustained high speeds (actually, all things being equal, they are faster at high speeds, it's just that their advantage increases as speed increases).
In the group rides that I do, where you need 50kph just to hold the wheel in front of you, aero wheels make a difference. Especially when it's your turn on the front.
Actually, if I recall correctly, the slower you are the more benefits there are to owning a aero wheelset. ex. Slow rider will notice a bigger jump in mph (or less wattage required) than a pro will because of all the opposing forces are multiplied at a higher speed. There's multiple discussions about this on slowtwitch with a more thorough explanation (equations, tests, etc.).