Originally Posted by annalisa_ferri
Both Zimmermann and ATE are good products if you have something OEM-like in mind.
Others are EBC (UK) and I have to say that also Brembo has excellent OEM-quality rotors.
I believe it's best to go with brand name products.
The reason I bought EBC dash-slotted rotors was because they are made in the UK, from high-quality metal and with good quality control and certifications, from a brake specialist company that's been around for many years with a reputation to protect. They also have drilled/slotted rotors available.
I've seen alloy wheels made in China with a fake certification stamp (post #5 in this thread): http://www.e90post.com/forums/showthread.php?t=370330
and I too would be concerned about getting brakes from a no-name Chinese source, your life can depend on your brakes.