Due to the differences in composition, steel wheels may not be chrome plated as easily as aluminum wheels. Steel is a thinner and much denser material than aluminum. Therefore, we cannot always polish out imperfections during the preparation process prior to the chrome plating. In  conclusion, when we rechrome a wheel, the rechroming process adds only a cosmetic finish. We do not re-fabricate, recondition, restructure, or otherwise restore the base metal of the wheels. All of our rechroming is done on a best-effort basis. Even though we are the industry quality leader, it is difficult for us to guarantee perfect results. The finished results will depend on many factors, including but not limited to the age, the condition, and the general suitability of the wheels as we received them. Keep in mind that the chrome plating will be new, however customers’ expectations of a rechromed wheel can be unrealistic since the chrome plating reflects any and all imperfections in the base material of the wheel. See photos of Porsche wheels before and after where corrosion is slightly visible on the finished product.