Generally speaking, Mercedes Bars have a long lasting coating of chrome on the surfaces that are easily visible to the eye. However, if one looks at the undersides (below rubber moulds), the chrome is not polished and is left in its natural state.
However, the real problem with both front and rear bars are the main support bars that nestle inside the bars, as well the retaining channels for the rubber trim strips. These are prone to heavy surface rust and accumulation of debris, whilst the...