* Worn or warped brake rotors: This is the most common cause. Over time, brake rotors can become warped from heat, causing vibrations felt through the steering wheel and brake pedal when braking. Warping can also be caused by sudden hard braking or hitting a pothole. Worn rotors are thinner than they should be and can also cause vibration.
* Worn brake pads: Severely worn brake pads can cause uneven braking and subsequent shaking. However, this is less likely to be the *only* cause of shaking; usually, worn pads would simply reduce braking effectiveness before introducing vibrations.
* Stuck caliper: A brake caliper that's seized or sticking can cause uneven pressure on the rotor, leading to vibrations. This can be caused by corrosion or a malfunctioning caliper piston.
* Damaged or unbalanced tires: While not directly related to the braking system, unbalanced tires or tires with uneven wear can exacerbate shaking, especially when braking. The braking force can highlight imperfections in tire balance.
* Bent wheel: A bent wheel will cause vibrations that are felt most strongly during braking. This can be caused by hitting a pothole or curb hard.
* Suspension issues: Worn suspension components, such as ball joints, tie rod ends, or control arm bushings, can amplify vibrations felt during braking. While less likely to be the *primary* cause of shaking *during* braking, failing suspension components will generally lead to increased overall vibrations felt throughout the vehicle.
* Problem with ABS system: Though less common as the primary cause of shaking, issues within the Anti-lock Braking System (ABS) can contribute to vibrations, particularly at lower speeds. However, typically you would notice ABS-related issues accompanied by other symptoms like warning lights or unusual braking behavior.
Troubleshooting Steps:
1. Visual inspection: Start by visually inspecting your brake rotors and pads for wear, damage, or corrosion. Check the tires for wear and damage too.
2. Check for wheel balance: Take your wheels to a tire shop and have them checked for balance.
3. Have a mechanic check the braking system: A mechanic can properly diagnose the issue. They will likely inspect the calipers, rotors, pads, and suspension components. This is crucial as several factors can contribute to this issue.
Don't ignore shaking during braking. It's a safety hazard and should be addressed promptly by a qualified mechanic to ensure safe driving.
