Hi All,
I searched google and this forum for an answer to my issue but couldn't find a direct one.
If I use my stock wheels which are 18'' will I need spacers or not?
Thanks.

 

Those wheels didn't come with that car. Pretty sure those are the 18" sport wheels from the G35 Sedan, not the G37. Might want to look around G35driver for answers. I could be wrong, but I don't think the 07-08 Sport Sedan came with the BBK. Doesn't mean they won't have clearance, tho. G'luck with answers.

Then again... huge front plate bracket, headlight washer fluid, fender marker... might be different where you are compared to the North American market. Israel, maybe?

 

Yeah mate you are correct - Israel.
Here those wheels came as OEM with the car.

 

Think you will need 15mm spacers up front.
Back should be OK.

https://www.myg37.com/forums/brakes-...inch-rims.html