biker jk wrote:They will be more aero than standard low profile rims!
Maybe, and even if they are, it's probably not all that much. They're a wedge shape (nothing like the zipp firecrest or the older "hybrid toroidal" profiles) and according to these tests the 2007 zipp 404 only saves you 3.5 watts over the dura ace C24 at 50km/h! The difference between the C50 and the C24 is only 0.3 watts! So rim depth is definitely not everything. You need to also take into account the rim profile, number of spokes, spoke shape etc.