I've seen a place advertised in the SJ Marcury News. It's called Acker Wheel (I'm reasonably sure that's the name) but don't know for sure if they repair wheels. I know that they carry factory-type wheels for sale. You could check it out with a phone call.

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Jay Yambrovich
Scotts Valley, CA.

1993 300 CE Cabriolet (A124) 131K miles
1997 C-280 133K miles

2000 BMW R1100RT 69K miles
1989 300 E 216K miles (sold)