Would it be better to put a wheelbuilder disc cover on a 50mm deep rim that weighs 908 grams, or a nice road wheel that weighs 874 grams?The road wheel is a roval roubaix 322x if that makes a difference. I am still looking for a deep rim wheelset but that is a figure based on the planet x 50mm tubular.
I don’t think your question is clear. The wheels sound very similar. What is it you want to know?
The road wheel is not a deep rim wheel. So my question is basically, would it be better to have the cover on a deep rim, or a standard rim? For example, pictures on the wheelbuilder site show a cover on a zipp 808 and also on a standard rim.
The deep wheel will be lighter. Carbon is lighter than plastic so the deeper the better. Some will argue that a 808 with a cover has better aero features as well than a normal wheel with a cover. As the 808+ cover is the same shape as a sub-9
It also depends on if you want to spend the money for the deep dish wheel. If you only have 100 just buy the cover. It will be nice if you have one wheel for racing and on for training as you won’t have to take it off all the time. If you are going to get a wheel for racing I would get a 808 with cover. A lot of people on st run that set up.
You’ll get about equal aerodynamics with either wheel covered. The question is what else are you going to be using these wheels for? Will you train on this wheel? If yes, get the tougher of the two options.