Skip the auto shop - Our mechanics make house calls

Q: Car vibrates when braking on a hill.

asked by on

When I apply my brakes while driving down a hill, the car starts to vibrate. It only occurs when I'm driving down a hill on the freeway. Is it time to get my brakes replaced, or is this pretty normal for steep highway hills?

A: The front brake rotors on this car is commo...

The front brake rotors on this car is common to get warped causing the vibration you feel. When you are going down the hill it is putting more stress on the brakes and will tend to heat the rotors more. The warped rotors are felt more on a downhill grade and will only get warped worse till you will start to feel it all the time. If you feel it in the steering wheel then it is in the front brake rotors. If you feel it more in the seat of your pants then it is in the rear brakes. It could be felt in both and would be in both the front and rear brakes. I recommend you have a mechanic like one from YourMechanic to inspect your brakes for you.

Was this answer helpful?

A: The vibration that you are feeling is comin...

The vibration that you are feeling is coming from the brake rotors being warped. This can happen over time with the rotors due to normal wear and tear. Applying the brakes going down hill makes the rotors get warmer than they usually do. Heat causes metal to expand and when this happens it makes the warpage bad enough that you can feel the shaking through the car when braking. Once the rotors cool down the warpage is less noticeable. Usually rotors can be machined so the rotors are flat again. It is possible that the rotors may be too worn, or too thin, to machine. I would ask for help from one of the mechanics at YourMechanic so they can come to you and check your rotors. Once they do that they will know whether or not your brakes need to be replaced or machined.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: I need to find tdc of the crank

You should align the triangle pointers on the lower crank sprocket metal plate and the triangle on the engine block to about the 1 o'clock position. The camshaft sprockets are aligned by putting both sprocket's writing straight across at the...

Q: Faint pulsating sound during idle

If the noise you are hearing is coming from the dash area then you may be hearing the blend door electronic actuator controlling the temperature output to the vents. Try to turn off your a/c or heater controls and see...

Q: When backing up a hill, reverse gear stops functioning

Hello there, thank you for asking about your 1989 Dodge Ramcharger. First check the transmission fluid level. If the level is too low and sitting in one corner of the pan, the transmission pump may be having a hard time...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.