What is the optimal speed to pass speed bumps without damaging the car?

[OIsaac]

Vehicles should generally pass speed bumps at around 20 km/h. The classification of speed bumps is as follows: 1. Cement speed bumps: These are relatively higher, allowing vehicles to pass slightly faster. Generally, speeds between 20-30 km/h cause minimal shaking. For larger vehicles, speeds of 30-40 km/h are acceptable. Such speed bumps pose little harm to tires but require consideration of the vehicle's ground clearance. 2. Metal speed bumps: These are usually lower with an inverted V-shape. While they don't harm the chassis, they can damage tires. The recommended speed is around 40 km/h, though slower speeds are better for tire protection. 3. Liquid speed bumps: The slower the better when passing these, with optimal speeds below 10 km/h. 4. Rubber speed bumps: These are primarily taller but don't damage tires. The recommended passing speed is below 40 km/h, which aligns with the speed limit requirements in areas where such bumps are installed.

[DelLydia]

I've been driving for ten years and have some real insights about speed bumps. The ideal speed is around 15 km/h, which feels almost like walking pace. If you exceed 30 km/h, the impact force can double, potentially causing tire bulges at best or damaging suspension arms at worst—repairs aren't cheap. I've seen someone hit a speed bump at 40 km/h, and soon after, their chassis started creaking. Easing off the throttle beforehand is key; let go of the gas as you approach the bump, and never brake hard while going over. Different cars handle it differently too—I've driven low-slung sports cars where 10 km/h was the only safe speed, while with an SUV, 15 km/h felt smooth. Oh, and go even slower in the rain—5 km/h is the steadiest. Cars with worn tires need extra caution; higher speeds can easily deform the rims.

[LaHope]

I usually keep my speed under 20 km/h when going over speed bumps. Exceeding this speed causes a loud clunking noise from underneath the car. Speed bumps are designed to force you to slow down – rushing over them only damages your own vehicle. Two years ago, I was in a hurry and hit a concrete speed bump at 40 km/h. The next day, I found a bulge on my left front tire and had to spend over 800 yuan to replace it. If you frequently drive like this, shock absorber leaks and suspension noises will inevitably follow. Different types of speed bumps also require different approaches. Rubber ones near school zones are manageable at 20 km/h, but concrete blocks near construction sites feel too fast even at 10 km/h. When carrying passengers, slow down even more – last time, an elderly passenger in the back seat got badly jolted. Now, I ease off the throttle 100 meters before a speed bump and let the car glide over naturally, which best protects the chassis.

[RafaelLynn]

As a car enthusiast, I recommend not exceeding 15 mph when going over speed bumps. The faster the speed, the greater the impact—at 30 mph, the impact force is four times that of 15 mph. Last time, I used a GoPro mounted under my car to film the chassis, and at 20 mph, the suspension was severely compressed. Frequent high-speed crossings can lead to shock absorber leaks and suspension bushing cracks. The vibration also varies with speed: at 10 mph, it's barely noticeable, while at 30 mph, the entire car shakes. Modified cars require extra caution—my coilover suspension developed strange noises after a few 25 mph crossings. My advice: observe the car ahead; if you see someone bouncing violently after crossing, you should slow down.