Hamann Wheels???

[330 Ci Guy]

Question...maybe some of you can help me out. Ok, I currently own a 2001 330 Ci "E46" and I am looking to buy some new wheels for it. I have concluded and know that I am going to purchase the Hamann Motorsport HM2 wheels but heres the question...Should I go with 18's or 19's? I know it will take away from the handling and all but would my tires rub on corners if I were to throw 19's on it.? How much difference does it make in the ride? Im not one of those super car tunning guys who knows every detail about everything so thats is why I am asking...Thanks!