Brembo Xtra rotors vs Otto Zimmermann Sport Coat Z

[inquirer]

Does anyone have personal experience or an opinion about which of the two rotors is better?

I'm talking about the:

• Brembo Xtra rotors (with high carbon, PVT ventilation and UV Coating) and
• Otto Zimmermann Sport Coat Z rotors (with the Coat Z anti-corrosion protection coating).

Thanks in advance!

 

[Trav]

Zimmerman are the better rotors.

 

[RooflessVW]

I always use Zimmerman or Sebro rotors if they're available.

 

[inquirer]

One of my questions would be which coating has better resistance.
My experience with painted rotors is that the sides of the rear rotors and the veins of the front ventilated ones rusted as if they were not painted. The hubs did well.

Performance wise I don't think there are any comparisons, but I would wonder if one of them would run cooler under spirited road driving on mountain roads.

 

[edyvw]

Does anyone have personal experience or an opinion about which of the two rotors is better?

I'm talking about the:

• Brembo Xtra rotors (with high carbon, PVT ventilation and UV Coating) and
• Otto Zimmermann Sport Coat Z rotors (with the Coat Z anti-corrosion protection coating).

Thanks in advance!

I always go Brembo, ATE, Textar before Zimmerman.
One thing about Zimmerman drilled rotors is that left and right rotor are drilled in the same direction. That tells you all you need to know about quality control.

 

[Trav]

AFAIK there is no need other than optics to drill left and right differently based on what their function is unless OE specified. It has nothing to do with QC. Zimmernman are German made with German foundry iron.

The turn direction of our sports brake discs is not static. Production-wise, opposing drilling patterns are specified in part (e.g. brake discs with curved fins). Brake discs running in opposite directions (right / left) generally do not cause any technical effect. Directionally bound brake discs are only found in very few vehicles - mostly due to technical design issues.

They answer all questions here..

Otto Zimmermann – FAQ

www.otto-zimmermann.de

 

[edyvw]

AFAIK there is no need other than optics to drill left and right differently based on what their function is unless OE specified. It has nothing to do with QC. Zimmernman are German made with German foundry iron.



They answer all questions here..

Otto Zimmermann – FAQ

www.otto-zimmermann.de

Sure there is no need in general. But that seems like saving few bucks so they do not have to drill rotors for specific side. Brembo etc. are all drilling them for specific side. A bit more emphasis on details is actually very German thing.

 

[Trav]

That is the point though isnt it, there is no need for that detail in most applications.

 

[nthach]

Zimmerman. Made in Germany. I’m sure Brembo would be fine, if not made in China.

 

[inquirer]

It also would be great if manufacturers were releasing technical specs like the coefficient of friction - temperature graph etc. It would make decisions. easier.

Brembo gives more details about their discs. They mention a specific veins design and they also talk about the material, which is a high carbon alloy. I read about some benefits for high carbon discs from EBC: https://ebcbrakes.com/ebc-high-carbon-brake-discs-for-performance-driving/
Zimmermann does not give any details about the alloy they use.

 

[UG_Passat]

I always go Brembo, ATE, Textar before Zimmerman.
One thing about Zimmerman drilled rotors is that left and right rotor are drilled in the same direction. That tells you all you need to know about quality control.

So are Brembo Xtra rotors, in my application, they are drilled in the same direction. Not really a big deal, since the vanes are straight. Funny, the spec drawing says the front rotors are High Carbon, but the box is not marked as High Carbon, maybe an Italian worker forgot to check it.

On straight vane rotors, directional drilling or slotting are just aesthetics. If it had curved vanes, different issue.

the old ATE Premium One slotted rotors, they are symmetrical also, as the vanes are straight as well.

 

[benjy]

i like EBC per their higher carbon content made in the UK, their pads usually from USA. Brembo makes great stuff but they have different grades like most + their name + reputation = higher $$$$ as they support professional racing $$$$. some motorcycle Brembo suppliers recommend EBC replacement pads for comparable performance BUT lower cost

 

[Trav]

It also would be great if manufacturers were releasing technical specs like the coefficient of friction - temperature graph etc. It would make decisions. easier.

Brembo gives more details about their discs. They mention a specific veins design and they also talk about the material, which is a high carbon alloy. I read about some benefits for high carbon discs from EBC: https://ebcbrakes.com/ebc-high-carbon-brake-discs-for-performance-driving/
Zimmermann does not give any details about the alloy they use.

Its all in the Q&A.

Zimmermann brake discs are usually made of cast iron (with flake graphite) of different qualities; they correspond to the material used for the original spare parts. Therefore, the utilization of such materials (referred to as "High Carbon” by the competition) has always been a matter of course for Otto Zimmermann.

 

[inquirer]

@Trav
What does this mean exactly? That all the rotors they make are the equivalent of what other manufacturers call "high carbon"? Or does this apply to specific rotors only?

 

[UG_Passat]

Brembo Xtra rotors by thisistan, on Flickr
Brembo Xtra rotors by thisistan, on Flickr
vs

Catalog of brake pads and brake rotors Volkswagen Tiguan 2016

Browse replacement parts in the Brembo catalog for your Volkswagen Tiguan 2016: find rotors and pads for your vehicle.

www.bremboparts.com

 

[Trav]

@Trav
What does this mean exactly? That all the rotors they make are the equivalent of what other manufacturers call "high carbon"? Or does this apply to specific rotors only?

AFAIK all Zimmermann rotors are "high carbon" iron. The difference is it is from German foundries not Chinese as most of the others are in this price class. Brembo makes some really nice stuff but from what I have seen it is not the stuff sold on Rock and other Euro parts places.

 

[slacktide_bitog]

Is that Sport Coat Z Geomet?

The cheap Power Stop coated rotors have Geomet 360.

 

[edyvw]

So are Brembo Xtra rotors, in my application, they are drilled in the same direction. Not really a big deal, since the vanes are straight. Funny, the spec drawing says the front rotors are High Carbon, but the box is not marked as High Carbon, maybe an Italian worker forgot to check it.

On straight vane rotors, directional drilling or slotting are just aesthetics. If it had curved vanes, different issue.

the old ATE Premium One slotted rotors, they are symmetrical also, as the vanes are straight as well.

Maybe, IMO it is saving a buck when advertising otherwise.
I have slotted Brembo on Tiguan and they are directional for each wheel and high carbon, per packaging.

 

[UG_Passat]

AFAIK all Zimmermann rotors are "high carbon" iron. The difference is it is from German foundries not Chinese as most of the others are in this price class. Brembo makes some really nice stuff but from what I have seen it is not the stuff sold on Rock and other Euro parts places.

I got my Brembo Xtra from RockAuto, and the price was too good not to buy.

More Information for BREMBO 0997721X

More Information for BREMBO 08A2021X

 

[2EHA]

Zimmerman is generally pretty overpriced, especially with their normal spec offerings. I remember their plain jane uncoated rotors for the C63 were like 2.5x the price of the Centrics. I’d feel good about purchasing them just became they’re not of chinese origin but honestly any rotor on clearance at RockAuto will do the same job for less.