I was thinking about getting focal r3's for my gs-r, but wasn't sure what size to get. Should I go with 17's or 18's? Thanks!!

 

17s look perfect, 18 is too big IMO

 

id go for the appearance forum first -- next go 16 (i find 17,18 to be way too big)

 

I don't know if you car is a show car or a go car...well if it is a go car my .02 is this:
IF you car is a go car 17's are to heavy so are 18's...so go nothing above 16's, and look for a lighter wheel if you can afford it which is not out of the questions since you are going to be getting Focal rims. anyway if you car is a show car then def 17 look the best if you car is dropped...IMO
Just tryin to help later