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My wife's MINI had a pulsating hum that increased with speed. I thought wheel bearing(s), but ended up being what I thought were fairly new Yokohama's. She punctured one of the sidewalls and the tire needed replacing. I had the tire dealer balance the other three and they showed me some very fine dry rot cracks in the side walls. The tread was good, but the tires were not new. I replaced all 4 tires and noticed the hum was gone when driving...
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2015 X5 50i
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