Tribosurface formation is crucial for a successful application of aluminum matrix composite (AMC) brake disk. In order to study this behavior, an AlSi7Mg alloy reinforced with 35 vol.% silicon carbide particles (SiCp) manufactured by field assisted sintering technique (FAST) was subjected to different machining or surface conditioning processes prior to friction/wear tests. AMC application in tribologically loaded braking systems involves a specific friction behavior that can be achieved with adequate geometrical surface properties ensuring rapid tribolayer formation. Various processes were used for the generation of AMC friction surfaces: face turning with and without ultrasonic vibration assistance in the direction of the passive force using CVD diamond tipped indexable inserts and different feeds. Some of the face turned surfaces were subjected to a plasma electrolytic treatment. The initial topography of the sample surfaces analyzed by scanning electron microscope (SEM) varied significantly.  To simulate tribological conditions in automotive braking systems, the generated AMC surfaces were initially evaluated against common brake lining material under dry sliding conditions in a pin-on-disc configuration. The results revealed that the coefficient of friction changed between 0.3 and 0.5. Moreover, the growth of the tribological layer formed on the AMC surfaces was investigated using SEM, energy-dispersive X-ray spectroscopy, and geometrical surface data obtained by 3D surface measurement to determine how quickly the tribosurface evolved during pin-on-disc tests. For geometrical surface analysis, a novel approach based on the material ratio Smr was developed in order to obtain quantitative findings for industrial application. It was observed that the transfer of pin material and hence flattening and smoothing on AMC surfaces, i.e. tribosurface build up, is closely related to the roughness of the surfaces caused by face turning and plasma electrolytic treatment, respectively. Besides that, the change in disc mass and pin length, as well as the adjustment relevelling rate, were determined in order to analyze the system wear behavior of the AMC surface/brake lining pin pairing. Later, AMC brake disks were tested in an automotive brake test bench and the results were compared to the performance of currently used grey cast iron discs.