Hello i just got a 2012 g37x sedan 7at with 40k miles like 2 weeks ago,I am new to this platform , i don't know anything about this car or the vq37 and i am looking to make it a little more aggressive, and i what to start with the wheels, I have the stock wheels on I think they are 225/55/17 and I found a good deal on some wheels that are 235/40/18R rims are 18x8.5 +44 offset are the wheels gonna fit my car ,if they fit is the awd systems gonna be affected?
Thank you so much

 

Those tires won't work. They are 5.3% smaller in diameter than your stock tires. The ECU complains bitterly if there is more than a 3% difference, lighting up the dash. 235/45 would work. The very top banner has a tire rim calculator under the Tools link you can use to determine different sizes that will fall with the 3% window.