18x9.5 wheels 30mm offset on G37 sedan, wondering what tire setup is best. I will be lowering the car 1.5in on H&R Springs. Would 255/35/18 look good or 235/45/18 better? Appreciate the help !

 

If you haven't bought the wheels yet I'd go w/ a +35 to +38, I'm running 18x9.5 +38 and even then the wheels are right at the fender. Your specs will be about a 1/3" out from mine. If you already have the wheels you'll probably be locked in to a 245/45 front and you can go up to about a 175 in back if you run just a bit of extra camber, like -2.0

 

I think those H&R springs are gonna lower you more like 1.9''