I've been using 16" for the last 2.5 years. I just picked up a set of 8x18 10x18 Classic II's They look much nicer in person but there is a noticable difference in drivability. it feels alot harder, doesnt accelerate as quickly.
so i guess its a balance between look and feel
front are 225/40/18
rear are 265/35/18
i reckon i could get away with another 5mil front and back, may soften up the ride a bit.
Before:
After:
BTW thanks Bill for the spacer advice - you got it exactly right!
wheel offset 65 with 18mil spacer