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550i question
Hey everyone i have a question hoping you guys can help me out with. I drive a 335, but my dad owns a 550i and at certain times while we are driving there is like a shreaking noise. Sounds like it comes from the front but im not sure. My Dad said it only happens at highway speeds, but it does happen normal driving sometimes. He took it in and dealer and another guy was there for same problem but it was his m5. The guy said it only happens to him at 140+.. any ideas??
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