Which to Pick: StopTech Vs. Zimmermann Stock Rotors

[dog2bert]

What rotors have you had better luck with, StopTech or Zimmermann for a stock replacement.

[mrgizmo04]

How do you use the car and why asking about luck, in terms of what?

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[dog2bert]

Normal street driving. With the Zimmermann, they seem to only last a year before they have a vibration. I am using Cool Carbon brake pads.

[Tbonem3]

Vibration could be from pad deposits - once warm, slam on your brakes from time to time to "clean" them and leave behind a fresh pad transfer.

While I don't hold either of these companies in high regard, I don't see any issue using their blank discs for basic driving. I've used centric blanks for years as well as Meyle.

Like Gizmo said, it can come down to driving style/needs. I think it also can come down to whether you're ok with a chinese made rotor or not, and your budget.

[Andy2424]

what actually speaks against original? I've had the best experiences with it on the road!

[dog2bert]

Who makes the BMW rotor? FCPEuro doesn't indicate an OEM source

[Andy2424]

Who makes the BMW rotor? FCPEuro doesn't indicate an OEM source

BMW does some of the work itself in Berlin. But ATE and Bosch also delivered to production

But I can say the same about them, there are even more OEM manufacturers

[Slideways]

They both work fine, but for the same price, Zimmerman.

[Andy2424]

brakes discussion .-) i have not had good experiences with zimmerman

[Nate047]

Most likely the vibration you're feeling is just a pad material deposit, as said above. It takes a lot to actually warp or otherwise damage a rotor to the point where you'd feel a vibration, especially from street driving with those type of pads.

[eacmen]

Whatever gets you free replacements from FCP.


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[Slideways]

Abrasive race pads used for a few miles will clean pad deposits very quickly. The brake bedding procedure does not work to clean pad deposits caused by HPS or Stoptech Sport pads.

[PSUEng]

I have no experience with either brand, but I did just get the Genuine BMW rotors and so far so good, for street driving. Same with pads.

[cobra]

I recently installed Zimmerman and had pulsing after like 2000 miles or something. It would be especially bad on hard braking. I exchanged them through FCP and the new set so far is perfect.

When I removed the old set, I noticed a ton of the zinc coating had built up underneath the rotor between the rotor and hub, and had scrubbed off. It created sort of a lubrication between those surfaces. I recall when I torqued that wheel it felt "mushy" as the nuts reached torque. So I think that was potentially a contributor. The rotors themselves looked perfect on the brake pad surface.

[jet_dogg]

There's an old Italian saying which translates into "savings never leads to profit".

Should be a sticky on this forum.