As a slight aside, if you intend doing any track days at Nurburgring, then you need to check those wheels are TUV certified - i know racingline say they are made ina TUV approved factory, but that doesn't mean the wheels themselves have been tested and certified.
Same applies for any aftermarket or replica wheels, bodykits, suspension etc - if they aren't TUV stamped then German police will issue a safety warning ticket.