Re: 18" AMG 5 spoke wheels?
My experience is that unless the aftermarket wheel is very well built they are not as good as the factory wheels. Also in recent years there have been a flood of oriental wheels that, like 2 ply tires, are not even safe in the driveway. I would trust someone like Needswings but few others.
I have a set of Enkeis I like for the blue car but all of my other cars are on factory wheels, except for the XF, 16x7 or 15x8.