Just got the G droped on some unrevused Z springs and now the poor offset of the OEM 18's is not appealing to me. I did a search and found a thread that talked about possibly 15mm spacers. Anybody have any experience with spacers and the OEM sport 18's?

Find a good shop that will have some spacers to test out before you make a decision...otherwise you'll risk buying spacers you won't be happy with

20mm. That's how I roll. There was a thread about this just a couple of days ago.....

-Jerome

I think that I will probably just try 20mm rear and 15mm front and have the rear stick out a little more flush than the fronts.
Anyone know if I will have any rubbing issues running 235/45/18?

If you use 20mm spacers you need to get extended studs. The stock ones are not long enough and you could have a failure.

Just get the ones that have studs already pressed into them. You'll be fine.

As far as rubbing, you should be fine. I'm running 245/40/18 and I'm a decent bit lower with my Sportlines. I only rub under EXTREME corning (at the track). That is now fixed, since I had my fenders rolled. You should be fine, though.

-Jerome