I am running 16x7 Panasports with 205/55/16's and the car has been lowered around 1" with Eibach springs (actually the rear of the car stayed the same height as the old rear springs were sagging). I had to trim the rear fender lips about 3/16" because the edge of the rear LH tire was catching on high speed bumps.

i once saw a 240z with 17" rims....but they just dont look good. Too much rim and not enough tire

What is the standard width and offset of the 72 240z?

Chris