Here's my car after adding 15's
H&R Springs, no rubbing so far
As of now the rear is more aggressive by a few mm's. A 15/12 or an 18/15 would suit the car better in my opinion if you want a square set up. The front could go up to an 18. 15 is deff the max for the rear. If you want a staggered look then a 12/12 or 15/15 is perfect. I'm going to keep this set up for now and see if i change my mind.