So i have my stock wheels and tires on my 08 g37s coupe. I wanted a little more agressive styles and was wondering what is a good product out there and size i need? Also will the ride quality suffer??

 

I've had good luck w/ Ichiba V2 bolt on spacers, H&R is another brand that gets good feedback. Spacers won't effect the ride quality.

 

what size should i go with? i dont want anything crazy just something light. what size front and back?

 

If you're not lowered the wheels will be out a bit more as they tuck in when you drop. Best thing to do is get a straight edge flush with tires and measure in millimeters to where you want them in your fenderwells, something in the 15-20mm range should suffice, but hard to say over the internet

 

with stock 19 and eibach, I was advised 20mm all around looks nice. Perfect or at least I feel flush look. H R brand are awesome.