http://zoouz.free.fr/Wheels/TMP_wheel/bmw_wheel_030.jpg

My wheels look kinda like that, but whats more important is that theyve got that colour..coating.

They actually have a cap like these ones..
http://zoouz.free.fr/Wheels/TMP_wheel/bmw_wheel_010.jpg

Its starting to chip in very small places on some wheels, and one of mine has some corrosion on it..

Can anyone tell me what i can use to clean them, and get the corrosion off? Is it ok to use an abrasive polish? Also, what can i do to prevent chipping, can i get them repainted (powdercoated whatever)..


Thanks!