Has anyone put after market wheels and tires on a G37x.
If so whast a good size wheel and tire?
Any pics?
Thanks

 

Welcome to the site Jamie
Plenty of options for your X, you can run bigger wheels, or even a staggered setup (wider wheels/tires in back) you just need to be very careful when selecting tire sizes since the diameter has to be very similar to your stock tire diameter. There's been issues at speeds over 80mph when diameters are more than 1% different. Luckily there are plenty of tire combos that will be in that safe range. For specific wheel info please check this section of the site and any further question just post over there.
Wheels & Tires - MyG37
There's some good pics in that section and the Media Share sections too
Media Share - MyG37