As stated, Zimmerman's are a great rotor. They're a popular application on Porsche.
Zimmerman's are good rotors. Had them for ~45K on the front of a B5.5.
I have Zimmerman's installed in the rear. They are the coat z rotors that insure the hubs don't rust. They are very good in combination with Akebono pads.
I just changed the front pads/rotors on my '04 325i to Zimmerman with the OEM Textar pads. Seem to work same as before, no complaints from me. They are dusty like people say, but I don't care too much about that.
Just the bigger carrier with the bigger rotors on the front. Didn't bother with bigger for the rears. I bought Red Stuff pads.
That being said, it would be great to see a basic writeup with pics of the fronts and rears being changed. I ordered and received some new slotted/drilled rotors with ceramic pads. When ordering, I just used the GTI as the model, since it uses the same brake rotors as the TDI, 312mm F, 272mm R - IIRC. If I have time, I will get some pics and write a rudimentary writeup on it. Not sure if I have time/patience to tackle this myself so I may just have my Audi/VW guy do the work (he has many more tools and 2 lifts). In any case, I will try to get some info and pics in here.
Just discussed this last week. I side with my VW dealer on it. They recommend just replacing the rotors, its really not that much more than having them turned, considering you almost guarantee no pulsation, no shimmy or shudder and more even brake wear.
Engine braking is how I got 60k miles out of the original brake rotors and pads on my '07 GTI as well as a steady 30 mpg while barely trying.
I have the zimmermans, and I've heard numerous people tell me they've seen and heard of them cracking under heavy heated use. It kinda worries me a little, but they've been solid so far, and I've yet to really roast them... Honnestly if I were to do it again, I would probably go with the brembos even though they may be a little more expensive. whats more important to stopping, is pads. The difference between the stopping power and feel of different pads varries greatly. I've had some heavy carbon kevlar pads that took a long while to warm up but once they were warm grabbed really well, but they were kinda hard for regular street driving. I've used stock pads which pretty much suck but last forever, and I've used some softer sport street pads that wear and dust a little more, but stop far supperior to oters for regular street driving. I've yet to push them to the point of fade, but we'll see where that goes once I've got the suspension and bleeding sorted
The rear brakes will be an absolute nightmare. There is not a lot of room. As far as I am aware, MK6/MKV R/R32 brakes are the same, so... prepare yourself for a miserable time doing the rear rotors. The rear pads are fine. The rotors suck ass.
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