I have a 2010 G37X Coupe and Im looking to replace my wheels. If i go with the wider wheels in the back, will it mess up my AWD system?

 

You can run staggered wheels, but use a tire calculator to make sure the overall diameters of the front and back are within 1% of each other.

 

Pick a set of tires from the following combos, then find wheels that will work with them
18s
235/45 & 265/40 (0.07%)
245/45 & 275/40 -0.07%
255/45 & 285/40 -0.22%

19s
235/40 & 265/35 -0.37%
235/40 & 275/35 0.67%
245/40 & 275/35 -0.52%
245/40 & 28535 0.51%

20s
235/35 & 275/30 0.07%
245/35 & 285/30 -0.07%

This calculator should be used when trying new setups~
https://www.myg37.com/forums/tire_rim_calculator.php

Keep in mind the variances with a minus sign have smaller rear diameters, this isn't as good since the rears wear faster, this will cause the variance to increase over time. Not a big deal when you're starting at zero or close, but if you're already almost at 1% variance this needs to be considered. None of the above combos should have enough rear wear to be a issue but

 

Depending on how much wider you're going, you can run a square set of tires to keep your mind at ease...won't be able to do a full tire rotation but if you stagger you wouldn't be doing that anyway.

 

Staggered setups ok for AWD

19"
235/40R19 & 275/35R19
245/40R19 & 275/35R19
245/40R19 & 285/35R19
20"
235/35R20 & 275/30R20*
245/35R20 & 275/30R20
245/35R20 & 285/30R20

* - the best of those 6. Puts the rears at 0.07% larger circumference than the front

 

haha didn't hit post quick enough

 

Man, I wish I had this type of web support and knowledge when I first got into cars 15-20 years ago.

 

This information is literally what I have been trying to figure out on my own for months lol. Great thread, even better replies!!

 

I can email an Excel worksheet to do this to anyone who wants it.

 

Slartibartfast - That would be awesome - I'm looking for to buy a new set of wheels/tires for my 2013 g37x S here soon and would love the excel sheet you have. Please forward it to sbsidi@gmail.com when you have some time! Thanks!

 

I would like one as well please, since I am also trying to get new rims for my 13 G37x.

Email it at itsjrbruh@gmail.com. Thanks

 

what width of wheel/rim to run all four 275? 9"?

 

9.5" width is a better mount for a 275.