So I had the rear passenger side wheel bearing replaced yesterday and now the noise is gone! I really drove the car today and for the very first time since I bought the car 5 months ago I can now hear the true Porsche engine/exhaust noted
I took a look at the failed bearing and it doesn't look that bad inside (even the mechanic agreed) but nevertheless it was making that loud road noise. Now I feel the car drives smoother and at the same time more powerful for some reason... Oh wait... forgot I also installed JD's Spirit of Ecstasy today... (maybe that's the real reason)!