Floert:

I have the same vibration, as you describe. I believe the problem arises from the poor mounting of the Dzus-type fastener from the factory.
I have obtained four Vintage Bonnet Fasteners from Morgan Spares, and will be installing them in the near future, when I bring my 2015 M3W into the shop for its 10,000 mile service.
I will report on the results.

Tom

Last edited by Piloto; 10/05/26 05:31 AM.