Originally Posted by
bbattle
Get Velocity Aeroheads oven Open Pros.
The Roadie Forum has had many epic debates over wheels and rim depth.
You need 40mm or more to get the aerodynamic benefits and those only at high speeds. If you race or do a lot of fast, long distance riding, then go for it.
Deeper rims are stronger but how strong do you need? Yes, you can get by with fewer spokes but you don't want to go down to 16/20 spoke counts.
Well built wheels with cheap rims will be much better than poorly built wheels with expensive rims so keep that in mind.
www.oddsandendos.com is a well known wheel builder that uses niobium rims. Mike Garcia will build you whatever you like.
Thats a load of bull. The 40mm threshold is a myth perpetuated by people who just repeat what they hear. Of course rims over 40 mm are more aero than those less than 40mm, but the aerodynamics gains of rim depth decrease with increasing depth. In other words, you derive more aerodynamic benefit going from 20-30mm than you would from 30-40mm. Keep in mind that deeper rims are also heavier. A 30 mm Kinlin rim is barely heavier than an OP, but 40+ mm deep rims are much heavier. Everything is a compromise, and 27-30 mm is the sweet spot for a general purpose aluminum clincher road rim.