Thanks for the prompt reply I thought I could just polish it normally with an eccentric but I will take your advice !That's very common on style-42 wheels, the outer lip has some sort of clear coat from the factory under which it will oxidise after several years.
That's nothing that a decent wheel repair shop couldn't fix, it's even doable without taking the wheels apart.
I'd advise against fixing yourself though, that's no DIY job without the proper tools. It needs to be sanded down prior to polishing and that will be a PITA if you do it yourself. Ask me how I know
Ok do you think for 600 pounds the wheels are worth it?