Purchased CPO from BMW dealership. Drove the car home went over a speed bump and heard the creaking. Contacted purchase dealer, no issues found. Took it to a different dealer - the service tech agreed to the creaking sound - resolution normal operating. I have 41000 miles on the car and the creaking was never resolved. Contacted BMW NA a few times - no resolution. There are many threads online where owners have reported similar noises but dealer says it’s normal operating.