hi, i have an audi s3 and want to get some porsche wheels to fit on to it. they are 7.5x18 et50 fronts and 9x18 et52 rears. does anyone here have porsche wheels on their car and where did they get the adapters from? are there any brands which are better? i need longer nuts as well, but will i need a new set of locking nuts? i would preferably go to a place where they know what they are talking about and get good advice on how thick the adapters should/can be. any help would be nice, i travel from london to gloucester regularly so hopefully there is some place along this route which can help? thanks.