Chrysler Kid - I do not do much city driving myself. Lighter wheels would help out in that situation. I'm not expecting any gains until I switch from the Chinese tires to Potenzas
Big Dave - I had the thought that the moment of inertia would increase when they were being put on and realized they were heavier. I already coast a bunch, so they may help out as I get used to them.
cosmick - Yes sir! I would say the space savers have good aerodynamics, being closed off and producing little turbulence. They also tucked mt tire in by slightly less than 1/2". That will make front skirts easier to make, increasing my aero!