I am actually leaning towards it being the tyres.
reason being the guy I bought the car off said he had new rear tyres fitted and it vibrated after that .
the tyres on it are crap both ends . nankang on the rear and some other crap on the front.
I checked the pressures and they are spot on.
its very frustrating as the 530i I had was perfect in this regard not a wobble out of it.
I am going to have to put up with it for a while and replace things over time until I get it sorted.
new tyres are a while away!!