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Steering Wheel Vibration During Braking - 2017 Audi A6

0

Nicole W. · rep 0 · May 22, 4:26 AM · 1 replies · solved · Question

Vehicle: 2017 Audi A6 Premium Plus

Hello forum,

I've been experiencing a noticeable vibration in the steering wheel whenever I apply the brakes, especially from highway speeds. It's a 2017 Audi A6 Premium Plus with about 70,000 miles. The vibration isn't constant, but it's definitely there when I'm slowing down from 60+ mph.

I recently had the tires rotated and balanced, and that didn't seem to help. The car drives smoothly otherwise. Could this be a brake issue, or something else entirely? Any advice would be greatly appreciated.

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 4:26 AM

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ClearTheCode admin answer:

Steering wheel vibration during braking is a classic symptom that almost always points to an issue with your braking system, specifically the front rotors. Here's a breakdown of the likely causes:

  1. Warped Brake Rotors: This is the most common cause. Over time, especially with repeated hard braking and heat cycles, brake rotors can develop uneven thickness or 'warp.' When the brake pads press against an uneven surface, it causes a pulsation that you feel through the brake pedal and steering wheel. While technically 'runout' or uneven thickness variation is more accurate than 'warped,' the effect is the same.
  2. Uneven Pad Deposits: Sometimes, material from the brake pads can transfer unevenly onto the rotor surface, creating high spots that mimic the effect of a warped rotor. This can happen if pads get excessively hot or if the vehicle sits with hot brakes after a hard stop.
  3. Sticking Caliper: A caliper that isn't releasing properly can cause one pad to drag, leading to excessive heat and uneven wear on the rotor, which then causes vibration during braking.
  4. Wheel Bearing Issues: While less common for braking-specific vibrations, a worn wheel bearing can contribute to wheel wobble and vibration, which might be exacerbated under braking forces.
  5. Suspension Components: Worn ball joints, tie rod ends, or control arm bushings can also contribute to steering wheel vibration, though usually, the primary cause during braking is the rotors.

When to see a shop:

  • As soon as possible. While not always an immediate safety hazard, warped rotors reduce braking efficiency and can increase stopping distances. They also put extra stress on other suspension components.
  • A technician can measure the rotor runout and thickness variation to confirm if they are out of spec. They will also inspect your brake pads, calipers, and suspension components to ensure everything is in good working order. Often, replacing the front rotors and pads is the recommended solution.
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