@ Meanwhile. Slime tubes and Specialized Armadillos Elites. I commute over a lot of glass and metal and nasty things that were giving me several flats per week from punctures in my old Vittoria Rubinos. I cut the casing through on a piece of metal in my Rubinos.

So then to decrease my drag coefficient by 5% I would need, better tubes, lower rolling resistance in my tires, and a lighter all around wheel?

Not really worried about raw speed because I am not a crit racer or TT person. I just want to get where I am going faster and with less effort. Which I know means lighter wheels, but how much lighter?

Right now my rear wheel weighs in at 1645.88g. That's huge considering that the Williams 30x rear is 890 without a cassette. If you add 200g for a cassette you are still at 1090g. This would reduce the overall weight by 555.88g. A 30mm deep aero section is useless unless you are at speed that I know from basic physics of flight.

Switching tubes, and perhaps a better tire would reduce rolling resistance. Would a standard butyl tube reduce the rolling resistance enough. Just worried about latex and commuting.