Hi, I bought a 2007 A4 2.0T with the premimum package a couple of months ago and I recently got it APR 93 octane chipped. Later this week I am getting APR exhust, Agency BOV, Carbo air intake, and upgraded intercooler installed on it. I was also looking into Brembo brakes and HRE wheels. However, I have read that I need 18" wheels in the back for the rear brakes and I currently have 17" wheels with summer and winter tires. Are Brembos out of the question? I was looking into a different suspension system too, any suggestions?