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1,170 Posts
Upper rear differential bushing. One crack in the rubber is OK, 2 cracks and it needs replaced. Also, I hate to mention it but connecting rod bearings are a weak point at high mileage. Lots of stuff online about that. My wife's 2013 X5 with an N55 spun a bearing at about 110,000 and I changed the oil at half of the BMW recommended interval.
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