I was running 17x7 factory vw wheels with 12mm spacers on my '99 A6 avant. I switched back to my stock 16" rims for winter. When I removed the wheels the spacers' hubcentric ring was broken off of both front wheels. WTF!! Did I just buy cheap **** spacers? Can I still use these without the ring? I never noticed drivability problem, but don't want to lose a wheel on the fwy. Can anyone recommend a good spacer. Thanks for any help