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Why does the steering wheel shake when you slow down?

There are several possible reasons why your steering wheel might shake when you slow down. Here are a few things to consider:

1. Unbalanced wheels or tires: This is one of the most common causes of steering wheel vibration. When your wheels or tires are unbalanced, it can cause the vehicle to shake at certain speeds, especially when slowing down. To fix this, you'll need to have your wheels and tires balanced by a professional.

2. Warped brake rotors: Warped brake rotors can also cause steering wheel vibration, especially when braking. This is because when the brake rotors are warped, they can cause the brake pads to grab and release unevenly, which can lead to vibration. To fix this, you'll need to have your brake rotors replaced.

3. Faulty suspension components: Faulty suspension components, such as worn ball joints or tie rods, can also cause steering wheel vibration. This is because these components help to keep the wheels aligned properly, and when they're worn, they can cause the wheels to shake. To fix this, you'll need to have the faulty suspension components replaced.

4. Driveline issues: Driveline issues, such as a worn driveshaft or a faulty universal joint, can also cause steering wheel vibration. This is because these components help to transmit power from the engine to the wheels, and when they're worn or damaged, they can cause the vehicle to shake. To fix this, you'll need to have the faulty driveline components replaced.

If you're experiencing steering wheel vibration, it's important to get it checked out by a professional as soon as possible to identify the cause and prevent further damage to the vehicle.