Running Zimmerman rotors with Porterfield R4S pads on mine. Brake dust is considerably less than the stock set up.
I just replaced all 4 rotors and pads last weekend. Found a good deal on Zimmerman rotors and TRW pads. My little diesel wagon is happy now. :)
i have zimmermann rotors on the rear and they look like new after one year and no rust unlike others in bought before and since then. Will buy them again. Zimmermann is good quality.
I’ve used Zimmerman for years, including beating them to crap at the track. Never any issues.
I replaced my OEM BMW blank rotors that were done and warped for the blank Zimmermann ones a week ago, but I got them from FCP euro which they had them at a lower price. I have a slow grocery getter 328i so no need to get anything more. I also used Akebono ceramic brake pads.
Zimmerman rotors with ferrodo ds2500's work for me. Also removed the dust shield and added rs3 ducts. Lately been getting about 2 weekends or ~16 sessions before they get low, but they're solid and wear predictably. Plus fcpeuro sells them.
May have been overkill but it worked a charm. (ebc yellow stuff, dot5.1, high carbon rotors)
What I've discovered is that the design of the OEM rotors are BMW 2-piece brake rotors with iron friction ring with a lightweight aluminum rotor hat. This design , to me, has flaws and is prone to excessive heat and warps rather quickly. I've had the same problem repeatedly. I switched to Zimmerman one-piece cast iron rotors with OEM pads, and I've driven very hard, and it hasn't happened ever again.
The stock front rotors have fairly significant heat spots and slight warping. I do mostly spirited street driving with some track use but obviously heat dissipation has been an issue, given how hefty the car is. Looking to upgrade the rotors and pads to more performance oriented options while hoping to keep the level of noise and dust relatively low.
I do not recommend Zimmermann, while they work ok for a lot of people, i had a lot of problems with the rotors.
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