Zimmerman has cast holes which precludes stress as on a drilled rotor.

Zimmerman is German made and OEM quality.

I use Zimmerman with Textar pads on my M103-12V TT which perform very well.
Consider I have twice the power of a stock M103-12V

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1971 280SL ROADSTER
1988 300CE TWIN TURBO WIDEBODY
1994 E320 CABRIOLET
1999 C43 AMG
2005 G55K AMG
2008 CLK63 AMG BLACK SERIES