Why does the car still shake at 120 km/h after tire balancing?
3 Answers
First, it is necessary to determine whether the wheel balancing was done accurately, as there might be issues with the balancing process. If the balancing is confirmed to be correct, the shaking at high speeds could be due to other factors. There are numerous potential causes for vehicle shaking at high speeds, such as problems with the tires, drivetrain, or suspension system. The following is an introduction to car tires: 1. Definition of car tires: Circular elastic rubber products mounted on various vehicles or machinery that roll on the ground. 2. Function of car tires: Mounted on metal rims, they support the vehicle body, absorb external shocks, maintain contact with the road surface, and ensure the vehicle's driving performance.
I recently encountered a similar weird issue. Even though the tires were balanced, the whole car starts shaking alarmingly once I hit 120 km/h. This is likely due to improper wheel balancing or problems with the rims themselves. For instance, if the rim is slightly deformed—maybe from hitting potholes—its surface becomes uneven, causing instability even after balancing. Another possibility is that the rim edges weren’t properly cleaned during tire installation, causing balance weights to fall off or shift, affecting precision. Additionally, worn-out suspension bushings can fail to absorb vibrations at high speeds, leading to severe shaking. My advice: first, revisit the repair shop for a rebalance, insisting they use precise equipment to check rim roundness. If the shaking persists, inspect the tie rods or shock absorbers for looseness. Safe driving is crucial—don’t ignore such vibrations, as they can lead to accidents. Avoid rough roads to protect your rims.
Experiencing vibrations on the highway after wheel balancing is common due to improper balancing procedures or chassis system issues. The technician might have failed to calibrate the machine correctly during balancing, or there could be rust on the wheel hub that wasn't cleaned properly during tire installation, causing the balancing weights to adhere poorly. Slight wheel deformation is also a frequent issue, especially after hitting speed bumps or potholes, leading to an uneven surface that causes shaking. Worn suspension bushings or unbalanced brake discs can also contribute to the vibrations. From my experience, it's usually necessary to retest the wheel's flatness with a high-precision balancing machine, while also checking for consistent tire pressure and any unusual noises from the bearings. Regular maintenance checks on wheel condition are recommended, and avoid sudden acceleration while driving.
