What Causes the Squeaking Noise from Car Door Seals on Rough Roads?

[Harry]

There are several possible causes for the squeaking noise from car door seals when driving on rough roads. Door-related noise: If you are unsure whether the noise is coming from the front or rear door, find a bumpy road to ensure the noise occurs at low speeds. While wearing a seatbelt and ensuring driving safety, slowly open the driver's side door and continue driving. If the noise persists, it indicates the rear door is the source. Have a passenger in the back perform the same test to confirm which door is making the noise. Seal rubber or door lock noise: Cut newspaper into 10 cm wide strips and place them between the seal and the door contact surface. Close the door tightly and drive to test. If the noise disappears, it indicates the sound is caused by friction from the seal rubber. If the noise remains, the seal rubber can be ruled out. Generally, cars within 3 years of use experience seal rubber noise. Door lock noise: Wrap a layer of black insulating tape around the door lock striker. Close the door tightly and drive. If the noise disappears, it confirms that the noise is caused by friction between the door lock hook and the striker.