I believe the rings are part of the wheel bearings. They are not on the output shafts. You need to replace the bearing. Unless you have gotten debris in the space which damaged the ring, cleaning them is the first thing, unless the bearing is bad. Pain to get to though.

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2003 X5 4.6is Estoril Blue
2005 Infiniti G35X
1972 Datsun 240Z
1991 Isuzu Impulse XS Sold
1972 Fiat 850 Spyder Donated
1972 Datsun 240Z Sold
1972 Datsun 510 Sold