What mm and type of wheel spacers should i get with my stock 18's?

 

I just recently asked the same thing and didn't get any replies. There is a thread on here where the guy used 25 mm wheel spacers all around on his 2007 G35 Sedan, but he had Infiniti M wheels on his. I think I'm going to get the same ones he got off Ebay, except in the 20mm variety. http://cgi.ebay.com/ebaymotors/_Car-...1%7C240%3A1318

 

Definitely +25mm spacers at all 4 corners. Make sure they are hubcentric to Nissans/Infinitis 66.1 mm and have the proper thread pitch and spacing 5x114.3.

Here's ckp's car w/ +25mm spacers. The stock rear 18s are the same width and offset as the M45 19s (8.5" wide +50 offset) The stock front 18s are very close at 18x7.5 +45 offset. So, going w/ +25mm spacers at all 4 corners would give you a very similar flushness as ckp:

https://g35driver.com/forums/picture...lots-pics.html

 

an '07 G35S look much better, and without rubbing? I'm talking stock wheels here.

 

Yes. Read my prior post. the M45 19s are identical to G35S rims in terms of width and offset in the rear and very close in the front.