[aerohead]

If you're looking at 35 mpg HWY,the mass reduction from the wheels won't show at the gas pump.
To get to 35,from 30.8 would require about a 27% drag reduction,or,from Cd 0.27,to Cd 0.197.
HONDA has already worked on the grille a bit.Allowing a 6% reduction would give delta 0.0162.
Pulling the passenger side mirror ,maybe delta 0.0135.
Together,you'd be looking at Cd 0.2403.
Dropping the car 2" according to some,will cut some frontal area,but not really alter the Cd significantly.If we allowed delta 0.01,we'd come in at Cd 0.23,still 0.04 short of 0.19.
I feel like you'd have to go 'deeper' on the aero to get to 35 mpg.