Hello, with my Yeti 2.0/110 4×4 the rear brake disc re. in the outer area is only rust, in the middle 2 bright wrinkles and in the inside more or less brightly ground. i.e. the braking force lies only in the inner area. I was at the dealer because I wanted to claim this after 9 months or 7′ km as a deficiency. This one said one must drive more powerfully or brake, not so careful. Warranty would be only 6 months. So well. I did not mount any seats at the back and can I then removed the brake pliers last week, removed the blocks in the mounted condition with 60th grinding paper wrapped around a file, looked whether foreign bodies or locks are present, assembled, no change. The question now is why only the brake disc shows hi. re this behavior on the inside, on the inside, on the inside, mainly alone, then loaded weights of approx. 120 kg behind and went on a brake tour, hand and foot brake, no significant change on the disc. On the other hand it was rather mixed, rust, blank, rust, blank Riefen. If it is on the pressure regulator, the one or the other looks like an axle, can one manipulate this time so that the rear axle is stronger? The hand brake should have the same effect on both sides. Had slowed it down to the stand several times from 120 kmh. Greeting A.