Each particualar car has different camber and alignment specs. "perfect" camber doesnt mean the tire contact patch is even with the road. Most cars, esp multi-link independant suspensions need some negative camber for proper handling. Having 0 degree camber means the tire is completely flat against the ground. Most cars dont want 0 degrees, esp in the rear of the car. You would loose controll around a heavy turn, with speed, pretty quick. Our stock camber specs call for around -1.5 degree average for the rear tires. For the fronts, anywhere from +.5 to .5 degree is ok. Why on earth do you want 19" wheels anyway?? The ride will suck, driving will suck, and bumps will suck. IMO, it will look like shit. The wheel will just look way to big for the body of the car. I laugh everytime I see a car like that. The wheel diameter itself has nothing to do with camber anyway, its the amount of suspension drop you do. The lower you go, the more negative camber that results. I have the Ingalls front camber kit, which can correct for +3 full degrees of camber. That should be enough for a completly slammed car. I am dropped about 2" in the front, I needed about +1.25 degrees for factory spec camber. By the way, if you need more camber correction than that, you will need to modify the front wheel well where the upper controll arm rides into. The control arm will hit the wheel well if you bring it out any more to correct more than about +1.5 degree with the ingalls kit. A 16" or 17" wheel is perfect for our cars IMO, and a 2" drop sets that off nicely, while still being very streetable, and very good handling.