Tire Imbalance

Actual Example of Frequency Analysis: Identifying Tire Imbalance

Shake is a common issue often caused by tire imbalance. Here's an example of how frequency analysis can help identify the root cause of the problem:

Symptoms:

The steering wheel shakes when driving the vehicle at a speed of 100 km/h, and the shaking peaks at 120 km/h.

Results of Measurement:

When measuring the vibration of the steering wheel with a vibration meter, a peak in vibration was detected at 120 km/h.

Results of Frequency Analysis:

Using a frequency analyzer, the frequency at the peak was found to be 18 Hz.

Calculation:

The tire revolution speed was calculated to be 17.7 Hz.

Results:

Since the frequency analysis result (18 Hz) closely matched the tire revolution speed (17.7 Hz), it confirmed that the tires were generating the vibration force, causing the shaking.