What Causes the Hissing Sound When a Car Goes Over Speed Bumps?
2 Answers
It is normal for a car to make a hissing sound when going over speed bumps. Here are some precautions to take when driving over speed bumps: 1. Slow down: Reducing speed in advance can minimize the risk of scraping the undercarriage and protect the suspension. 2. Avoid crossing at an angle: This increases the stress on the body and wheel suspension, and frequent use of this method can lead to body distortion. 3. Avoid passing with only one side of the wheels: Prolonged use of this method can cause suspension misalignment or deformation, as well as uneven tire wear. 4. Pass with both wheels simultaneously: Ensure the tires pass vertically to maintain balanced suspension stress. It is recommended to keep the speed below 20km/h when passing over speed bumps.
I always hear a hissing sound like air being released when going over speed bumps, which is quite annoying. This is usually a sign of shock absorber issues. Inside the shock absorber, there's oil and gas. If the seals are damaged or leaking, the gas will escape during compression, causing this noise. My old car had the same problem, and upon inspection, we found the shock absorbers were aged and cracked. Ignoring it can make the ride feel bumpier, handling unstable, and increase the risk of skidding, especially when turning in rainy conditions. I recommend getting it checked by a professional shop ASAP. Replacing the shock absorbers isn't expensive, and once fixed, the noise disappears immediately, ensuring safer driving. This issue is common in older models or cars with poor maintenance. Regular part replacements can prevent it.
