Hello, I've had my 2009 3.0 TDi (Ibis white) for 2 weeks and decided to wash it. To my horror I noticed loads of small orangey brown specks near the bottom of both front wings and doors. In the old days of mark II escorts I would consider it rusting from below but I thought these Audi's were galvanized. Is this a known paint issue or the effect of contamination/brake dust on the surface??? Thanks in advance.