Hello together! I bought a Hyundai i20 about 4 weeks ago, which has now run about 50k km. He had a previous owner who was probably quite busy in city traffic. When braking I hear a dull grinding noise again and again (no squeaking). First I thought that this has to do with flying rust, which was also clearly visible at the beginning. Now the brake discs are free of rust (as far as I can see) and it still grinds. The car is always standing outside. I park on a quite steep slope and therefore always use the hand brake. When I loosen the hand brake in the morning and let it roll back, the car cracks once until it rolls down the slope, as if the brakes had “curved up”. But this happens with frost also at 10 °C. At the last inspection at 38km nothing was noted about it and that is only a year ago. I have read that brakes usually wear out after 100k km. Is it still possible that the brakes are worn out? And then what parts would have to be replaced?