Sorry to hear this. Generally all bars will make this noise when not carrying a load. There are a number of things that can be checked and changed to reduce this.
Please check you have fitted correctly the end caps and the rubber strips. If this is done, you can move the front bar back along the car slightly. This will allow the airflow coming off the windscreen to miss the bar. The noise is created by the air passing an empty and smooth roof bar. Once you are carrying items such as a bike, or roof box, this will be greatly reduced or will stop completely. These bars are fast to fit, so we would always recommend removing when not being used to carry items.
