With 40,000 miles on the odometer, this BMW X6M started to make knocking noises and the owner brought it to the local dealership for diagnosis. The owner was quoted over $40,000 to replace the engine so he brought the car over to us to get our second opinion and do the job at a much more reasonable price.
After inspecting the internals, we confirmed that it spun a rod bearing.
One of the BMW X6M's crankshaft journals damaged by the failed bearing.
Failed rod bearing that grinded down the crankshaft journal. Side by side comparison with the normal one.