Car shakes at 40-6- mph and brakes squeak

When I apply the brakes while going between 40-60 mph, my car starts to badly shake. I have been to the dealership twice due to this problem. The first trip, the brakes were changed. The second visit, there was a bubble in my tire, so it was replaced and they also performed a balance and alignment. I have to drive on the highway 5 days a week and the shaking problem persists. Even having new tires, balance, and an alignment, it still shakes when I press on the brakes. There is a hard vibration when I brake and a squeaking when going in reverse. I went to the dealership again for the same thing
Experienced mechanics share their insights in answering this question :
Many different things can cause a vibration at speeds. The most common causes of this would be warped brake rotors, a damaged suspension component, or tire that is damaged or out of balance. It is possible for this fault to be other items than what has already been replaced.

A tire with a bubble could very well cause a vibration though if the problem remained after then it was not the cause. The brake rotors are normally the root cause, if only the pads were changed and the rotors were not resurfaced or replaced the fault could still be present.

A qualified technician, such as one from YourMechanic, will be able to diagnose the shaking you’re experiencing and perform any repairs required.

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If the rotor is warped or has a variation in thickness, you may find your vehicle shakes when braking, or the steering wheel could shake, or the brake pedal may pulsate. Have your brake system checked and, if a damaged rotor is the problem, the part can be replaced.
Wheel Alignment Issues

If your car`s wheels are not properly aligned, it can cause the tires to wear unevenly and the car to vibrate or shake, especially when you apply the brakes.

If you feel the shaking or vibration in your steering wheel and your brake pedal, it could be your rotors. The rotors get pressed by the brake pad to help slow your vehicle down, and if the rotors are out of balance, this could be causing the vibrating tremors that you feel in the pedal and steering wheel.
Wheel alignment can also be a plausible reason why your brakes are shaking and squeaking. If the wheels are not properly aligned your suspension and tires will eventually become especially vulnerable to damage.
1) Your pedal vibrated because the ABS (anti-lock braking system) was activated. If the pedal vibrations (pulsing and groaning noises, too) happened when you e-braked, chances are ABS was activated. ABS prevents your tyres from locking up, which could lead to an uncontrollable skid.
A stuck brake caliper can also cause brake vibration. The caliper is the device that the brake pads are attached to, and a caliper pushes the brake pads to take hold of the rotors when you apply the brakes. Calipers can get stuck and when they do, you`ll experience shaking or a powerful pull to one side or the other.
Even slight alignment issues can cause steering wheel shaking or vibrations. In addition to steering wheel shaking, wheel alignment troubles can cause uneven and accelerated wear on your tires. A quick wheel alignment service can address this issue and its symptoms.
This may be a variety of things, such as wheels and tires out-of-balance, poor alignment, worn or failing wheel bearings, worn or failing control arm bushings, or worn or failing suspension components. A wheel bearing will usually fail due to pitting or small damage on the surface of the rollers or the bearing race.
If your car shakes when you brake, that is a pretty good indicator that you should have the brakes checked out. The most likely cause of your steering wheel shake is warped rotors. When a driver presses the brake pedal, brake pads squeeze the brake rotors to bring your vehicle to a stop.
No. Generally, any noise from misalignment is caused by abnormal tire wear. If tires are the source of road noise, an alignment correction may be needed. However, this won`t solve the noise problem.
Not only can poor wheel alignment accelerate tire wear, it can reduce your fuel efficiency, make wheels work against each other, place strain on suspension components, and impede braking ability. When your vehicle is out of alignment, it effects your entire vehicle and may put your safety at risk.
Its role is to indicate the condition of the brake pads. If you hear a horrible high-pitched squealing or hissing noise from your tires when you hit the brakes, this is probably because the brake pad wear indicator is rubbing against the rotor to alert you.
If your brake discs are unevenly worn the brake pads come in contact with the flat spots present in the rotor`s surface which causes the vibration that we call brake shudder. This kind of uneven wear to the discs can be the result of a number of things.
Early on, it might sound like something is rubbing when you let off the brake pedal. Ignore that and you will eventually hear a metallic grinding, scraping, or rubbing sound that indicates metal-on-metal contact in your brake system. A less-common occurrence is the sound of a “clunk” when you hit the brake pedal.
In a vehicle with disc brakes, the most likely cause of shaking is a warped or otherwise damaged rotor. Warping can be a consequence of normal wear. The repeated application of the brake pad onto the rotor will wear away the rotor material in that contact area.
A shudder or vibration may develop while driving at speeds between 35 and 40 MPH. Our technicians tell us this condition is commonly caused by a failed automatic transmission torque converter. It is recommend to replace the torque converter and install an updated powertrain control module (PCM) to correct this concern.
Consistent Shaking: Alignment issues will cause constant vehicle vibration, no matter whether you are braking, accelerating, or maintaining a consistent speed. Steering Wheel Pulling: You may also notice that your vehicle is “pulling” towards one side of the road or another rather than seamlessly steering straight.
If you think your wheel alignment is off, here are some things you can check for. If you`re not turning, your steering wheel should sit pretty close to perfectly straight and centered. If you`re not sure, look at your car emblem on the center of your wheel. If that looks crooked then your alignment is off.
Excessive tire noise can be caused by a number of different factors: the sound of your car tire tread contacting the road surface. air being compressed inside the grooves of the tread- the larger the tread, the more air volume, the noisier the tire. the malfunction of the front wheel bearings.
Why Are My Tires Still Vibrating After My Wheel Balancing Service? Wheel balancing is one of the best solutions for vehicle vibrations, but imbalances aren`t the sole cause for a shaky ride. For example, if you still feel tire vibrations after a wheel balancing service, you may be dealing with tire runout.
Tire Problems

Tires are one of the most common causes of car vibrations. One of the possible issues are out-of-balance tires. Your problems may not be noticeable at slow speeds, but the shaking will intensify as you accelerate to 55-60 miles per hour. The steering wheel, or even the entire car, will start to vibrate.

Unbalanced or Damaged Wheels – Around 45 MPH, you may feel a vibration through the steering wheel. As you increase in speed, the vibration will intensify. In order to rotate properly, the wheels of a vehicle need to be balanced.
Faster Driving (45 mph+)

Tires can get unbalanced from wear or tear, or because of more severe issues. If you think this might be your problem a normal tire rotation and balance should solve the shaking problem. Another thing that can cause shaking above 45 mph is a brake caliper that is sticking to the wheel.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

When the car heats up the brakes squeak. When the car cools down they’re fine, but when it heats up they start squeaking again.
ANSWER : Hi, thanks for writing in. Pads and rotors can become "glazed" if overheated. If this happens, the bonding material in the brake pads can rise up out of the pads and transfer to the rotors, causing a bluish discoloration to the rotors and cause a squeak. Removing the pads, sanding the surface of them and the rotors may help. If not, a light resurfacing of the rotors and using some brake lube on the backs of the pads should help. If you would like help, consider having an expert automotive technician from YourMechanic come to your home or office to inspect your brake system for you, and make or suggest any repairs or cleaning as needed.

Car shakes at 40-6- mph and brakes squeak
ANSWER : You have a brake rotor that is warped causing the vibration since the vibration is only when you hit the brakes it is then in the brakes. To narrow it down when you brake, do you feel it more in the steering wheel or more in the seat and less in the steering wheel? If you feel it in the seat more than the steering, then it is in the rear brake rotors. If you feel it in the steering more then it is in the front rotors. If you feel it in both then both front and rear have warped rotors.

Car shakes at 40-6- mph and brakes squeak
ANSWER : Many different things can cause a vibration at speeds. The most common causes of this would be warped brake rotors, a damaged suspension component, or tire that is damaged or out of balance. It is possible for this fault to be other items than what has already been replaced.

A tire with a bubble could very well cause a vibration though if the problem remained after then it was not the cause. The brake rotors are normally the root cause, if only the pads were changed and the rotors were not resurfaced or replaced the fault could still be present.

A qualified technician, such as one from YourMechanic, will be able to diagnose the shaking you’re experiencing and perform any repairs required.

I changed my brakes and they still squeak I applied the brake stop squeak and they still squeak
ANSWER : Hi there. The leading cause of brakes squealing after replacing the pads is excessive brake dust trapped between the caliper and the rotor. Typically when brake jobs are completed, a professional mechanic will spray brake cleaner liberally on the calipers and rotor to remove any brake dust that has embedded in between the two components. If this is not completed, the extra brake dust will be trapped between the fresh pad and the rotor. When heated, it can create an annoying squeaking noise. The best way to resolve this issue is to remove the tires, place a drip pan under the hub and spray brake cleaner along the caliper and the rotor. Let it dry for a few minutes then reinstall the tire, torque it down correctly and test the brakes. If this does not resolve your problem you might want to have one of our professional mobile mechanics come to your location and complete a brake system inspection.

EPC light on 2004 Jetta. Code said brake switch faulty, but brakes lights worked. Replaced brake switch, now no brake lights.
ANSWER : Hi there. The first thing that pops in my mind beyond of what you have listed is perhaps the electrical harness attached to the brake switch. Perhaps the harness itself is damaged or you have an exposed wire, loose ground wire somewhere. You might want to have a professional mobile mechanic come to your location and complete a brake lights not working inspection to help you diagnose this issue.

My car is hesitating / jerking at speed intervals of 20 mph, 30 mph, 35 mph and 40 mph.
ANSWER : This may be a sign of a dirty or failing mass air flow sensor. The mass air flow sensor is a unit in the intake system that monitors air intake as it is mixed with fuel prior to being injected into the motor. When this fails, this can cause an imbalanced air/fuel load to be supplied to the motor which results in an over fueling or under fueling situation depending on the conditions. This may cause a hesitation, loss of power or jerking reaction when this sensor is malfunctioning. When this is not working properly, you may also notice a strong smell of fuel. I would suggest having a professional from Your Mechanic come to your home to diagnose your mass air flow sensor.

Car shakes when I apply brakes doing 45mph or more and even when I don’t apply brakes around 60 mph 2005 Chevy Equinox
ANSWER : Hello – you likely have multiple problems here: one of which exaggerates the others. Given your mileage, your front struts are likely worn. This is important because the tire imbalance you feel at 60 mph (without braking), and the vibration you feel when applying the brakes (brake pad deposits on the brake rotors – sometimes called warped rotors), are amplified by worn suspension parts. I would start with an inspection of the front suspension for worn parts, and brake rotors by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, give you an accurate assessment of damage and cost estimate for repairs. Then have the tires checked for balance at a tire shop.

I pulled into a parking spot and put my car into park, when I lifted my foot from the brake the car continues forward.
ANSWER : The vehicle transmission did not get back to the park position due to the shift cable came off of the transmission shift linkage. You will need to have a mechanic like one from YourMechanic come to you and check the shift cable connection at the transmission to see if the shift cable bushing broke and let the cable end disengage from the shift linkage. The shift cable may need replaced if the cable end bushing is not available. I recommend a mechanic check the shift cable and replace cable or repair cable end as parts allow.