Holding carbon rotor for the first time in your hands you feel you’ve been cheated all your life. Size and weight just don’t seem appropriate for each other! And the thought sinks in – cast-iron is only good for barbell plates!
1. MB E212 AMG brake rotor 402 mm, 39 mm thick, 7,65 kg of weight.
Carbon gets oxidized and the rotor structure rapidly loses it’s hardness.
The oxidation level of a rotor can be determined, believe it or not, by it’s weight.
Particularly in this case it’s min. weight is 7569 g., scales show 7655 g., that means this rotor is new and have a long road ahead of him 🙂
Manufacturer claims that it does not wear off, which is quite easy to believe.
One of the production steps is curing in an oven under the 1300 C temperature for 24 hours.
2. Brake rotor BMW M5 F10 400 mm diameter, 36 mm thick, weight 13,9 kg.
There are left and right brake rotors.
Upper calculated temperature limit for it is 450 C.
As rotors are produced on a large scale, the elegant and reliable design was chosen.
Steel locating pins get inserted right after the channels are drilled into the working part of the rotor.One end of the pin has a nail head like thickening.
Those heads are perfused in liquid aliminium alloy under pressure.
This structure turns out light and cost effective.
3.BMW X5M brake rotor, 395 mm diameter, 36 mm thick. Weight – 17,53 kg.
Even though this rotor has an aluminium hat and directed ventilation.
Two parts of it are joined by studs.