Dom you can't go wrong with either brand. I've used only zimmerman rotors and have had no issue whatsoever. Ate is oem so there you go. If ate is giving you more bang for your buck then I would go with ate. Just do a write up on your experience with ate so other members can search and read when deciding what to buy. Good luck.

 

I have Zimmermann's on two cars front and rear. They are performing fine. Using ATE non-ceramic pads.

 

Same here. I bought Zimmerman front rotors with the BMW value pack brake pads that include textar pads and the brake sensor. No problems here.

 

AFAIK, both ATE and Zimmermann are OEM suppliers for BMW. Did I remember that wrong?

 

You need to show the front wheels. Even with OEM pads the rears do not look to bad but the fronts dust up quickly.

 

I really want to go with a set of drilled Zimmermanns, since I've read some bad opinions on the ATEs and everyone else sticks to Zimmermann. My parts supplier offers me a drilled set for the front for a good price, however, he doesn't seem to have a drilled set for the rear, only solids. Does Zimmermann make drilled rear rotors for daily drivers at all?

 

Zimmermann Catalog:
http://www.otto-zimmermann.de/en/katalog.html

By the looks they don't have a drilled rear only a drilled front.

 

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I have used EBC pads for years Porsche and BMW M5 track use (yellow pad) and multiple cars on the street, currently have their 6000 series Green Pads and GD rotors on my 4.8i X5 are they are just awesome !

For the price there are worth considering !