Is this something to worry about??

[AndyG]

Polish dust? I do use autoglym polish on them very often.You may have a point.I will try clay bar I think.Thanks.

[MBCGTI]

To be honest it was only a quic clean job to all the salt off so didn't even use any wheels cleaner or clay. Might try it before going to VW, to be honest shouldn't be a problem as I know the guys that run the VW garage so hopefully shouldn't have to argue too much.