Someone might have already mentioned this. The fact that you did the big brake upgrade on the front probably means that you won't be able to fit stock 5x13 inch wheels. The stock wheels on a tii were 5x13 ET 29. Those 5.5x13 ET 18 wheels (320i wheels) aren't stock and probably won't fit with the big brakes either. Just saying,
John
PS, I'm in the same camp as Paul (13" wheels with the Pirelli 185/70 CN36 tires, love um)