Martin Woodhead

I had a similar issue recently on my 2015 BMW 3 series due to wheel bolts being over-tightened by ATS. This resulted in one of the bolts shearing off when it was next undone (when switching from summer to winter wheels). To remedy the issue a hexagonal stud had to be welded on by a local garage and then undone with a large wrench. It sounds as if wheel bolts are generally being tightened far too much?