Skip the auto shop - Our mechanics make house calls

Q: Annoying hissing metallic sound

asked by on

There is an annoying noise that sounds like it is coming from the wheels. After the car warms up, driving for 5-10 minutes, and when driving over 35mph, the noise increases as speed increases. The noise is like hissing and sounds metallic. The dealership said the rotors were glazed, so they resurfaced them. They had recently already replaced the front brakes. After leaving the dealership and driving to work, the noise is still there; however it has changed to a higher pitch and is fainter. This noise literally bounces off trees or an embankment if I'm in a dense area. Can you tell me what is causing this?

The dealer is correct to say it is the brakes. The noise is mostly due to the material in the brake pads. The metal in the brake pads can cause a scrapping noise, then changes with temperature and will not go away with the pads that were installed.

There may be aftermarket pads on the market that can reduce or eliminate the noise for you. You will have to talk to a local parts store to see what options are on the market for your vehicle.

You can then replace the pads and rotors with the aftermarket ones. The only thing is do not be surprised if they have some noise also, although they may have less noise.

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・Fair and transparent pricing

Get a quote

What others are asking

Q: My car won't start

Hi there, It sounds like your battery is now "flat" - no charge ("lights on my dash start to dim"). The security system has probably invoked the "immobilizer" as well, the portion of the security system that detects what it...

Q: Ticking noise when turning hard - 2012 Subaru Impreza

Hey there. I would start with inspecting the CV joints and axles as this is a common noise that can come from this area of the car when they are worn or need to be replaced. This may also be...

Q: Car shut off and remained unresponsive since then - 2010 Mercedes-Benz S400 Hybrid

Hello. The PCM is a potential cause of the problem that you are experiencing. The PCM is the main computer for the car and could be malfunctioning. There could also be a problem with the electric motor of the hybrid...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...