So now that we know the g37x coupe has equal size 18 inch journey wheels all around, how would the stock oem 19 inchers work (staggered as on the sport) to be used summertime on the g37x coupe?

 

Couldn't you just get 19" Coupe wheels from a G37S and just run the same size tires on all 4 corners?

 

It's not possible because the wheels on the sport version are staggered, so the fronts and the rears aren't the same width.

 

Just because the wheel widths are staggered doesn't mean you can't run the same size tire. I am sure you could fit 245's on the stock front wheels.

 

People here are suggesting to me to run Fronts all around?
Any reason over rears all around?
Either one when checked in an online calculator have diamter difference of about 0.5% from the original 18 inch wheels? Is this sufficient to caquse problems? I heard of a rule of 3% being the limit but that was for non-AWD car.

Secondly does anyone know the offset on the AWD coupe wheels? Is it the same as the base non AWD? One wheel site I called when looking Aftermarket wheels suggested they were about +55!!!! Haven't had confirmation but if that is true it limits choices of wheels unless we want our stock wheels sticking out at least 1/2 inch