2gen wheels have a offset of +52......
You are 100% right, I have a set and pulled the same stupid stunt as Taylor.
It was depressing, and the offset is +52mm confirmed.
Lower equals further out from the car.
Zero offset is exactly in the middle of the tire tread, is where the rim starts, and the closer to the outside is positive offset and closer to the inside is negative offset.
I think what Chris is discussing when he states; "backspacing" is that a small offset doesn't necessarily clear the damn calipers.
The Grand Prix B4U is +25mm, and while the lip makes for being far away from the outside of the wheel but not the spacing required on the back end.
If you want my advise, and what I'm looking into G35/350Z rims, I've put my hand in there, appear to be perfect!
I'm thinking of trying to grab a used set.
114.3 X 5 bolt pattern as well. They are RWD.