When turning, the tires make a squeaking sound, which is usually caused by several factors. Firstly, if the steering assist system lacks specific steering assist oil, this noise may be generated. Secondly, if the drive belt of the steering pump is loose, it can also cause such phenomena. Especially when the steering wheel is turned to the extreme position, the pressure inside the power steering system will reach its peak, making it more prone to squeaking sounds and causing adverse effects on the steering system. Therefore, it is recommended to control the time for turning to the extreme position within five seconds.
The inappropriate size of the Ackermann angle may also lead to excessive or insufficient steering of the car's inner wheels. When the friction between the tire and the ground is insufficient, the tire may slip, bounce, and make noise. In addition, some specific versions of the vehicle, such as extended wheelbase or modified wheel hub shock absorbers, may cause the Ackermann angle to not match the original chassis design, resulting in noise. This kind of noise usually disappears after the tire is heated, so there is no need to go to a 4S store for inspection.
Steering oil, also known as hydraulic oil, is the source of power for the steering system. If the hydraulic oil is contaminated or deteriorated, the formed oil film will not meet the normal working requirements. The lubrication effect of deteriorated hydraulic oil will decrease, thereby increasing friction between metal components, shortening component life, and possibly causing noise when the steering wheel rotates.
For models that use hydraulic power steering, when the steering wheel is turned to the extreme position, the hydraulic power pump will be in a high load state, and the noise generated at this time is a normal phenomenon.
In short, the condition of hydraulic oil is crucial for the steering system. Deteriorated hydraulic oil not only affects the strength of the oil film, but also reduces the lubrication effect, intensifies the friction of metal components, shortens the service life, and may cause abnormal noise in the steering wheel.
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