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Why does the front end shake sometimes when applying brakes?

Several factors can cause the front end of a vehicle to shake when applying the brakes. Here are some common reasons:

1. Warped Brake Rotors: This is one of the most common reasons for brake shudder. When brake rotors become warped or uneven, they can cause the brake pads to vibrate, leading to shaking or pulsation in the steering wheel and front end.

2. Uneven Brake Pad Wear: If the brake pads are worn unevenly, they may not make consistent contact with the brake rotors, resulting in vibration and shaking. This can occur due to various factors, such as worn-out brake pads, uneven brake caliper pressure, or a seized brake caliper.

3. Loose or Worn Steering Components: Loose or worn components in the steering system, such as tie rod ends, ball joints, or control arm bushings, can contribute to shaking when braking. These components play a role in maintaining proper wheel alignment and can affect braking performance.

4. Tire Imbalance or Misalignment: Unbalanced tires or improper wheel alignment can cause vibration and shaking, especially during braking. Unbalanced tires can create a rotational force that affects the steering system and can be more noticeable during braking.

5. Faulty Brake Calipers: Malfunctioning brake calipers can lead to uneven brake pad pressure and cause the front end to shake when braking. Issues like a sticking caliper piston or a damaged caliper can result in uneven pad wear and vibrations.

6. Brake Fluid Issues: Air trapped in the brake fluid or low brake fluid levels can cause a spongy brake pedal and shaky steering. Air in the brake lines reduces brake effectiveness and can lead to uneven braking, resulting in shaking.

If you experience shuddering or shaking in your vehicle's front end during braking, it's important to have it inspected by a qualified mechanic as soon as possible. Ignoring these symptoms can compromise your braking performance and overall safety.