just an update to my setup, i have the factory 16" P5 wheels (+50 offset) on the wife's cx-7 now. NOTE: I needed 5mm wheel spacers(purchased from wheeldude.com) for the front wheels. the wheel DID NOT clear the caliper without them! I probably could have used the 3mm spacers, but didn't want to risk it with winter being here.
the 16s had a large enough inside diameter, but only JUST barely. one of the wheel weights was loose, and i'm pretty sure it will be ripped off by the time my wife gets home from work today.
tires are Pirelli Ice and Snow 235/70/16
