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Old 12-03-2012, 06:59 AM
radarguy radarguy is offline
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Location: Connecticut
Join Date: Feb 2010
Posts: 878
Mein Auto: 2016 A6; 2015 X5 35ix
My case was tire related and took a lot of time and energy to solve. After switching to 18 OEM wheels and Continental tires to solve the 19 LS2 bubble problem, I had vibration. Six Hunter balances from the dealer as well as an independent tire retailer did not solve the problem. It turns out that I had a tire with a manufacturing defect. The defect caused the tread to wobble slightly while the tire was spinning on the balancer. It passed the Hunter balance and runout tests. The BMW dealer and the BMW roving engineer said the tire was within spec. I replaced the tire and everything was fine.

FWIW five of the 12 19 LS2s I had on the car received a conventional, non-Hunter spin balance at the Goodyear dealer and the others a Hunter balance at the BMW dealer. I had no vibration problems whatsoever on those tires.
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