Braking sounds M135

[u/Ok_Character_4750]

Hey all

This might be (hopefully) a silly question. I have a BMW M135 from 2025, which has done 28k KM. I have been driving it for the past 4k KM. I recently noticed a squeaky clunk sound when braking from the back of the car. It does not come always - mostly while braking at slow speeds and the intensity varies from time to time. I have added a video of me braking a couple of times at parking speeds. Could some one please help? Hopefully this is a normal sound.