show hardly any run-in behavior, and it is also clearly visible that the experiments in dry conditions are noisier than the lubricated ones. In order to ease the comparison between the different lubrication and texturing conditions, we calculated the mean value of all experiments for the last 250m of sliding distance, as here a steady-state sliding was reached in all cases (see figure 3). This analysis shows that in the lubricated case (a) both textures increase friction, a factor of 1.6 for the wide and a factor of 3.0 for the narrow ones, compared to the polished, untextured control.