v36_g35x

So I just bought a 2013 g37xS. I wanted to put 20 inch staggered wheels on the car.
I still own my v36 sedan awd, I know that the rolling diameter on the sedan has to be at or under 1%.
Is the coupe the same? I have a spare set of 20x9 and 20x10
245/30r20 and 275/30r20. Will it cause my awd ligiht to come on?

blnewt

iTrader: (13)

Can't run 30 series front & back on AWD, run a 235/35//20 front and you'll be fine with your current rear size.

FWIW Here's the best tire combos I'd recommend for 18s/19s/20s, then pick proper wheel widths/offsets to get them to fit~
18s
235/45 & 265/40 (0.07%)
245/45 & 275/40 -0.07%
255/45 & 285/40 -0.22%

19s
225/45 & 255/40 0.06%
235/40 & 265/35 -0.37%
235/40 & 275/35 0.67%
245/40 & 275/35 -0.52%
245/40 & 285/35 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