Why does my car shake when I brake?
31st March 2026
It’s a concern if your car starts to shake as you apply the brakes. It can make even a short journey feel unsafe and uncomfortable. While this issue might sometimes be minor, shaking during braking often points to problems within the braking system, tyres, or suspension components that should be checked as soon as you can.
Understanding why your car shakes when braking helps you recognise potential safety risks early and know when it is time to book a professional inspection.
What Causes a Car to Shake When Braking?
The most common cause of vibration during braking is an issue with the brake discs. Brake discs are designed to provide a smooth surface for the brake pads to grip when slowing the vehicle. Over time, however, heat, wear, and repeated braking can cause the discs to become uneven.
When brake discs become warped or unevenly worn, the brake pads cannot grip them effectively. This leads to vibration that travels through the steering wheel, brake pedal, or the entire vehicle. Drivers often notice this more clearly at higher speeds or when braking firmly.
Another common cause can be worn brake pads. Brake pads gradually wear down with use, and when they become too thin or uneven, they cannot apply consistent pressure to the brake disc. This can result in shaking or pulsing when braking.
In some cases, the issue may not be the brakes themselves but the tyres. Uneven tyre wear, unbalanced tyres, or damaged tyres can all cause vibration that becomes more noticeable when braking. Tyre problems can affect the way the car grips the road and how force is distributed through the braking system.
Suspension and steering components can also contribute to the problem. Worn suspension parts such as control arms, bushings, or ball joints can allow excessive movement in the wheels when braking. This movement can cause shaking that feels similar to brake issues.
When You Might Notice the Shaking
It’s important to notice where the shaking occurs in your vehicle to determine the underlying issue.If the steering wheel shakes when braking, the problem is often linked to the front brake discs or front suspension components. Because most braking force is applied to the front wheels, any irregularities in this area can quickly be felt through the steering wheel.
If the brake pedal pulses or vibrates under your foot, this typically points to warped brake discs. As the pads press against an uneven surface, the pedal will move slightly in response.
If the entire car shakes during braking, the issue may involve tyres, wheel alignment, or suspension components that affect overall vehicle stability.
Can You Continue Driving with This Issue?
While your car may still technically drive with this problem, it is not something that should be ignored. Vibrations during braking often worsen over time as the underlying issue develops further.
Warped brake discs can reduce braking performance and increase stopping distances. Worn tyres or suspension components can also affect vehicle control, particularly during emergency braking or in wet conditions.
Continuing to drive without rectifying the issue may also cause additional wear to other components, which can make repairs more expensive later on.
How to Fix a Car That Shakes When Braking
The solution depends on identifying the root cause of the vibration. In many cases, replacing worn brake discs and brake pads will resolve the issue and restore smooth braking performance.
If tyre wear or imbalance is the cause, tyre balancing, alignment, or replacement may be required. A full tyre inspection can identify uneven wear patterns, pressure issues, or damage that may be affecting braking stability.
Suspension or steering faults will require a mechanical inspection to identify worn components and ensure everything is functioning correctly.
A professional inspection is the most effective way to diagnose the issue quickly and prevent unnecessary damage to other parts of the vehicle.
Other common issues relating to car shaking:
Why Does My Car Shake on Start Up?
If your car shakes when you first start it, the issue is usually related to the engine or fuel system. One of the most common causes is a misfiring engine. This happens when one or more cylinders fail to ignite fuel properly, which creates uneven engine movement and noticeable vibration while the car is idling.
Faulty spark plugs are often responsible for this. Spark plugs ignite the fuel and air mixture inside the engine, and if they become worn or damaged, the combustion process can become inconsistent. This can lead to shaking immediately after starting the vehicle.
Another possible cause is a failing engine mount. Engine mounts hold the engine securely in place and absorb vibration. If one of these mounts becomes worn or breaks, the engine can move excessively when the car is started, which creates shaking or rattling.
Fuel system problems can also cause rough starting. A clogged fuel injector or dirty air filter may prevent the engine from receiving the correct fuel to air mixture, which can lead to poor engine performance and vibration.
If the shaking continues for more than a short period after starting, it is best to have the vehicle checked. If you ignore engine vibrations, this can lead to further damage over time.
Why Does a Car Shake When Driving at High Speed?
If your car begins to shake while driving at higher speeds, the most likely cause is a problem with the tyres or wheels. One of the most common issues is unbalanced tyres. When tyres are not balanced properly, weight is unevenly distributed around the wheel. As the vehicle gains speed, this imbalance creates vibration that can be felt through the steering wheel or throughout the car.
Wheel alignment problems can also cause shaking at high speeds. Misalignment affects the way tyres meet the road and can lead to uneven tyre wear, reduced stability, and vibration when driving.
Tyre damage or uneven wear is another possible cause. Bulges, worn tread, or flat spots on tyres can create an uneven surface that becomes more noticeable as the car travels faster.
In some cases, worn suspension components such as ball joints, wheel bearings, or control arms may be responsible. These parts help stabilise the wheels and absorb road movement. When they wear out, the vehicle can feel unstable or begin to vibrate.
If you notice shaking while driving at motorway speeds, it is important to have your tyres and wheels inspected. A professional tyre check can identify imbalance, misalignment, or tyre damage that can affect safety.
Why Does My Car Shake When Accelerating?
A car shaking during acceleration can be caused by several mechanical issues, which are often linked to the drivetrain, tyres, or engine performance.
One possible cause is worn or damaged spark plugs. Similar to shaking during start up, poor ignition can affect engine power delivery when you press the accelerator. This can result in hesitation, uneven power, and vibration.
Another common cause is worn constant velocity (CV) joints. Constant velocity joints allow the wheels to receive power smoothly while turning and moving with the suspension. If these joints become worn, you may feel vibration or knocking when accelerating.
Damaged or unbalanced tyres can also create vibration that becomes more noticeable when the vehicle is gaining speed. Tyres that are unevenly worn or incorrectly inflated can affect the car’s stability during acceleration.
Drivetrain issues, such as worn driveshaft components, may also cause shaking when power is transferred from the engine to the wheels.
Because several systems can cause this problem, it is important to have the vehicle inspected if the shaking continues. A professional check can identify the exact cause and prevent further damage.
If you notice shaking while starting, accelerating, or driving at high speed, booking a professional tyre and vehicle inspection can help identify the issue early and keep your car safe to drive. Merityre’s technicians can inspect tyres, brakes, and suspension components to ensure your vehicle remains stable and road safe.
Book a Brake Check/Service with Merityre
At Merityre, our technicians carry out a full brake inspection including the brake discs and pads, and assess your tyres and suspension to identify the cause of the vibration. If repairs or replacements are needed, we can provide the right solution to restore safe and smooth braking performance.
Book a brake check or a service with Merityre today and make sure your vehicle remains safe, stable and comfortable to drive.