Quote Originally Posted by Don B
I thought hubcentric spacers had to be at least 10mm?

I have 7mm ACS spacers, but the spacer is an adaptor in itself so so doesn't that it's less than the 10mm
thought so too, well for the E46 CB anyway.
It looks like there was not enough material to allow for any strength, look how thin it is where it broke.

personally i would dream of putting two spacers together to make 1 larger spacer.