I had a local tire dealer put new snows on the aluminm wheels I have for winter. These aluminum wheels were universal, so they had hub-centric rings to adapt from the 73mm bore to the 63.4mm of the Taurus. Luck would have it that I hit a good enough pothole to bend one of these wheels. So I bought new 17" steel wheels and had the same tire dealer switch the tires over. One week in and I have a bad vibration... so I thought, "Eh maybe I need hub rings for these too". I assumed it could just center on the lugnuts. So I bought 63.4mm to 67.1mm rings to adapt the Taurus hub to the steel wheel. Well, I took off the wheels yesterday and found out why the thing shakes. They never took the old hub rings out! The wheel was never fully against the hub. The hub bores of the steel wheels are now bent towards me and the hub-rings for my old wheels are bent up. Called the store and sent and e-mail to their corporate. Waiting to hear back. I'm not nuts, that should've been caught... right? To me personally, and I'm not a tire shop pro, if a wheel doesn't sit on that hub great, you take a good second look? I'm assuming they threw the wheel on the lugs and ran 'em down. Like you can clearly see the black aluminum hub rings against the silver rotor when they're on. A wheel could've come off and seriously damaged the car or injured me or another motorist. I am bothered and very disturbed.