What Causes Car Body Shaking While Driving?
2 Answers
Reasons for car body shaking while driving include: 1. Unbalanced wheels: Wheel imbalance is a common issue in many vehicles. Since tires and rims cannot guarantee uniform quality during manufacturing, wheels must undergo dynamic balancing after assembly. Additionally, as tires wear with use, periodic dynamic balancing is necessary after certain mileage intervals. 2. Loose suspension components: The chassis suspension consists of various links and support arms connected through ball joints and rubber bushings. Increased wear on these ball joints and bushings can cause looseness in the suspension system, leading to body shaking while driving. 3. Excessive steering gear clearance: The vehicle's steering system uses a rack-and-pinion mechanism to convert the steering wheel's rotational motion into wheel movement. Over time, wear between the gear and rack creates excessive play, causing slight lateral wheel movement even without steering input, which results in body shaking sensations.
When I feel the car wobbling while driving, it's most likely related to the wheels. For example, if the tires aren't balanced properly, the car will shake noticeably at highway speeds, especially between 60 to 80 km/h. Or if the tire wear is uneven, or the tire pressure is too high or too low, it can affect stability. If the shock absorbers in the suspension system are worn out or leaking, the car will bounce excessively over bumps. Misaligned front wheels are also a common cause, making the car sway when the wheels aren't straight. Warped brake discs can cause the front end to shake when braking. I recommend starting with the basics: check the tire pressure and wear condition. The ideal tire pressure is usually between 230 to 280 kPa. If that doesn't solve the issue, take the car to a professional shop to test the suspension and alignment. Addressing these issues early can prevent rapid tire wear and make driving more comfortable.
