The shadow chrome effect finish has become incredibly popular over the last couple of years ….. and was the OE spec from MG Rover when new on the apex wheels used on the V8s.
Best to use a very fine rolled aluminium chrome effect paint, lightly dusted over a fully cured 2K topcoat paint. Then buff the chrome before lacquering over it, giving the shadow chrome effect.
The chrome effect paint is usually used over gloss black, but if painted over gloss white it gives a brighter-looking finish that is more similar to nickel. The shadow chrome finish can be darker by applying less chrome paint, or brighter by applying more, but the chrome effect usually stands out better with thinner paint.
There is a similar bmw wheel called CHROME SHADOW A56
MG ZT info mods and maintenance 