I have a 96 A4 quattro, I got 17" aftermarket rims I got used they didn't come with rings and I know there is a gap in the center boar. But how big is the gap? I am guessing the rim is 70mm but what size is the ring on the rotor? If anyone has done this and can post what size ring I need its greatly appricated. My car shakes wicked bad over 60mph and it didn't with the stock rims. Thanks

 

The size of the hub is 57.1 mm. So thats your inside size for the concentric rings. What you can do in the meantime is jack each wheel up and loosen the bolts. Then retighten them with no weight on the wheel and the taper on the hub bolt will help center the wheel.

Good Luck...