Question on rims and some other aftermarket parts?
 

I just leased a new G37 coupe and I was looking into some rims and I was wondering what size would look good I know I want 19" but I was wondering about the width? Also I was thinking about adding an exhaust but I heard if I do any modifications like that it would void the warranty is it true or not? If it doesn't which exhaust sounds good but not too loud?

Get what wheels you like. There are soo many styles and choices. Plus wheels are expensive. So you have to set a budget and look into those ones. Most people on this site either have Volks, Iforged, or SSR's. Those brands of wheels aren't cheap. Most people are running a 10 or 10.5" in the rear. There are lots of vendors on here that can help you with purchasing a set of wheels. Amplified Motorsports, Ravspec, Thmotorsports,etc

^like jks said, go with what wheels you like.

If you are going for looks: iForged, 360Forged, Vossen are your best 3 IMO
If you are going for performance: Volk hands down

probably the most common setup is 8.5/9 in front and 10/10.5 in rear


As for exhaust, listen to sound clips and read reviews and see what you like. For future reference, with modding the ONLY way it can void a part of your warranty is if there is a problem and the dealership can show that the aftermarket part caused the problem.

If you want something not very loud (that is a very subjective description) you might want to start with the Tanabe Medallion

Congrat's and welcome to the forum... Another Vegas g37 thats awesome what color is your coupe? I just ordered the Tanabe from Lou@amplified gave me a great deal ... wheels vendors on here or bestwheeldeals.com

Thanks for all the input I appreciate it. I have a white G37 coupe btw.