Any aftermarket solid rubber engine/transmission mounts on this car always bring out significant vibrations at multiple rpm ranges..
There is a reason why BMW went with liquid filled engine mounts.. liquid absorbs vibrations.. BMW could’ve saved money by going with soft solid rubber but wouldn’t get the desired refinement!
Based on personal experience with Bimmerworld rubber motor mounts, the vibrations do decrease after 1200 miles or so of use but still present. You might want to keep driving for a thousand miles & see if it improves enough..
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