I have seen this a few times on heavy winter use vehicles. The road salt just ate the rotors away until the disk separated from the hub or the bridge sections of a ventilated rotor would corrode away and the two friction surfaces would separate. Not pretty at highway speeds. Never seen it in a MB but since you are in Montreal I would say you have your fair share of road salt. Replace what needs to be replaced and rinse the brakes and suspension thoroughly whenever you can. RT

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84' Mercedes Benz 300D Anthracite/black, 171K
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