I replaced the wheel bearings in April and used the MB green bearing grease. I checked them last night and they both were fine. Front passenger rotor has scraping mark towards the medial section of the rotor. Brake hoses were replaced about 2-3 years ago, brakes were bled and fluid was changed about 6 mos ago. It seems that when I turn left and the front passenger side compresses, that's when the scraping occurs. It seems to only be on the inside of the rotor.

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1990 190E 3.0L