Does anyone have Rohana RC10 wheel 19X8.5 (front with 245/40/19) | 19X9.5 (rear with 275/35/19) running on G37X coupe? if so what are your offset or spacers?

My Car is now lowered but I am not sure how previous owner had this whole thing set up (It seems that wheels are about or maybe sticked out little farther than frames and splashes dirt around the side of car). Need some help!

Also my AWD light flashed when over 80mph+ so would changing it to 285/35/19 fix the problem and run smooth as square set up?

 

That setup should be ok for your AWD, not perfect like a square setup but well under 1%. Are your rear tires worn quite a bit more than your fronts, if so your variance may be around 1%. 285s are a better mount on a 10" rim, if you were to change sizes I think I'd keep the back 275s and go w/ 235/40/19s in front, especially since you said your tires were poking a bit.

 

Okay, Its poking at back i think not front, also 275/35/19 is 1.03% and makes some flashing AWD sign over 80mph.