What is the reason for still experiencing shaking at 120 km/h after performing wheel balancing several times?

[DeJuliana]

After performing wheel balancing, if the car still shakes at 120 km/h, the first thing to determine is whether the wheel balancing was done accurately, as there might be issues with the balancing process. There are numerous potential causes for vehicle shaking at high speeds. Problems with components such as tires, the drivetrain, or the vehicle's suspension can all lead to shaking. Below are specific reasons: 1. Tire pressure issues. Significant differences in tire pressure among the four tires, or tire pressure that is either too high or too low, can cause shaking. Large variations in tire pressure result in inconsistent energy absorption and shock absorption capabilities of the tires, leading to body shake at high speeds. Additionally, nails puncturing the tires can also cause shaking. 2. It could also be due to inaccurate four-wheel alignment, which can lead to vehicle shaking. In such cases, a four-wheel alignment needs to be redone. 3. There might also be issues with the engine. For example, aging engine mounts can cause vehicle shaking.

[Addyson]

I've been driving for decades and have encountered multiple instances where vibration persists even after wheel balancing. The most common issue is with the tires themselves—such as aging deformation, severe uneven wear, or minor rim distortion from previous impacts. Wheel balancing only addresses weight imbalance, but tire deformation is physical damage requiring new tire replacement for a permanent fix. Also, check if tire pressure is stable and consistent, otherwise the situation worsens. I recommend first having a professional shop visually inspect tire condition—replace immediately if faulty rather than repeatedly rebalancing. Develop the habit of checking tires before every highway trip to prevent hazards.

[SanLondon]

This is a common issue where the car still shakes after wheel balancing. I understand it might involve the suspension system. For example, damaged shock absorbers, loose ball joints, or worn steering knuckles can cause shaking at high speeds. Wheel balancing only addresses the wheels, but chassis issues also need to be checked. It's recommended to take the car to a reputable repair shop for a lift inspection instead of just focusing on balancing. Daily driving habits are also important—avoid rough roads to reduce impact. Address the issue promptly, as prolonged shaking can accelerate part wear and lead to higher costs.

[SanParker]

The root of vibration isn't always about balancing. I've seen cases where wheel hub deformation or loose screws rendered wheel balancing ineffective. Uneven tire wear, insufficient or uneven tire pressure can all cause vehicle vibration. Start with simple checks: inspect tire wear patterns and look for impact marks on wheel hubs. If that doesn't solve it, escalate to suspension inspection. Find a reliable technician to perform a high-quality balancing once - don't repeatedly visit cheap shops which may waste your time.

[SanWalter]

I've experienced the same issue, the vibration persists even after multiple wheel balancing attempts. It could be due to poor tire quality or deformation from prolonged use, as balancing can't fix physical damage. Another possibility is aging suspension components, such as uneven shock absorber performance or bent control arms. A comprehensive diagnosis is recommended: first inspect the tires and rims, then examine the suspension system. Safety comes first - if the vibration is severe, avoid high speeds and pull over. Regular maintenance can prevent these problems; getting a chassis inspection every six months is advisable.

[VanSamantha]

Multiple failed wheel balancing attempts can stem from various causes. Undetected tire bulges, wheel rim deformities, or suspension issues like loose control arms may be the culprit. Installation problems such as improperly seated bolts could also contribute. Having handled similar cases, I recommend starting with an external inspection: check for visible tire defects and verify correct tire pressure. If unresolved, proceed to internal checks of suspension and chassis components. Visit a professional shop with advanced equipment for a one-time solution – avoid repeated adjustments. High-speed vibrations pose safety risks; prompt repair is crucial for driving safety.