In addition to a squeaking noise when you drive over a bump, a bad ball joint may also be signaled by clunking sounds, poor handling, and unnatural pulling. Since ball joints act as the link between the wheels and other suspension components, a bad ball joint can also impact normal steering capabilities. Improperly maintained ball joints can result in improper wheel alignment, suspension noise, and uneven tire wear. Like all suspension system components, ball joints are designed to experience wear and tear due to friction and thus have a maintenance schedule that can help prevent unexpected repairs or replacements. Some ball joints are load-bearing and will wear faster than normal ball joints. Vehicles with shocks have upper and lower ball joints, while many vehicles with struts have only lower ball joints. They are designed to allow for movement in two planes at once like when the vehicle’s suspension system is moving up or down while the wheels turn left or right. Ball joints are ball-and-socket joints that act as the pivot point between the wheels and the rest of the suspension system. More specifically, the squeaking noise is likely due to a worn ball joint. So it’s no surprise that a squeaking noise coming from your car when you drive over a bump can likely be attributed to the suspension. Your car's suspension system is designed to ensure your tires maintain constant contact with the road, particularly on uneven surfaces like bumps.
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