Why does the steering wheel shake when braking?

[Alfie]

Here are the reasons for steering wheel shaking during braking: 1. Steering wheel vibration during braking is mostly caused by uneven wear or deformation of the brake discs, with a few cases being due to power steering pump failure. 2. In cases where replacing brake discs has previously solved the problem, if steering wheel shaking recurs during braking, the cause is still primarily related to the brake discs. Although replacing the brake discs initially resolved the steering wheel vibration issue, if the problem reappears shortly after, it may be due to poor quality of the newly installed brake discs, leading to uneven wear or deformation again in a short period, thus causing the steering wheel to shake once more during braking. 3. Apart from brake disc issues, factors such as sticking brake calipers, severe wear of the kingpin, or severe bearing wear can also cause steering wheel vibration during braking. However, these faults cannot be resolved by simply replacing the brake discs. Therefore, it's preliminarily concluded that the root cause still lies with the brake discs. It's recommended to choose higher-quality brake discs and replace them along with related components like brake pads.