So I currently own a black 2008 G35x AWD and I have the stock 17's on it. I'm looking to get some 18's or 19's, maybe even 20's for it. What do you guys suggest? I want the wheels to be flush with the fender so what kind of offset should I run? If you do recommend some rims and tires, please include links to where I could potentially buy them or go check them out. I could use as much information as possible on this topic, so anything would be great. Thank you!

 

I recommend reading the threads in the wheel/tire section, a good google search will get you started as well.