Q: Noice with new rotors/pads

asked by on October 24, 2017

With new slotted and dimpled rotors and new ceramic pads from Brake Performance ...when I break hard at higher speeds (50+ mph) I get an annoying humming sound until the speed is significantly deduced. What is going on?

My car has 34500 miles.
My car has an automatic transmission.

Squealing noise from brakes Inspection $94.99 - $114.99 Get a Quote

The noise may be due to interaction between the pads and the rotor "design" that sets up a harmonic at particular speeds. OEM pads and rotors are already designed, tested and approved as matched materials in order to avoid the possibility of brake noise and vibration. Other possible causes of your issue are thickness variation in the rotor (can’t exceed .001 inches) or run out of the rotor as installed on the hub (can’t exceed .002 inches). It is also possible that the caliper pistons are cocked or not free in the bores. If the noise does happens to arise from the brake pad material interacting with the rotor, really the only solution is to remove the pads and install OEM friction material and OEM rotors. If you would like a diagnostic regarding this issue, to determine if the cause is vehicle hardware versus brake consumables such as pads and rotors, please request a brake noise diagnostic and a certified mechanic will be dispatched by YourMechanic to evaluate your brakes and address all of your concerns.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

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


Experienced Mechanic?

Earn up to $70/hr

What others are asking

The car is overheating and hissing when the AC is on
Hello, if the car is only overheating when it is not moving then it is usually caused by an air flow issue through the radiator. Most of the time, this is caused by an issue with the radiator fan not...
My 95 Mitsubishi 3000gt won't start. All the lights turn on, battery is good. I don't know what too do
I'd recommend having a mechanic come to you and check it out to see if you have a starter (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-starter) or a ignition/fuel problem. There's not enough information for me to really narrow it down for you. I'd recommend getting...
Engine overheats, heater blows out cold air, coolant boils in radiator
Sounds like multiple problems here. I would first correct the "no heater" scenario. This is likely the heater control valve (https://www.yourmechanic.com/services/heater-control-valve-replacement) not allowing what is clearly hot water into the heater core. The reason for correcting this first is that...
Engine light came on , was hesitant when i pulled off , sometimes cut off when at stop lights
Hi and thanks for your question. Sounds like there could be a fuel or spark issue with your engine. First you would need to scan the computer for what the engine light code has stored to have a starting place...
I'm trying to find the RKE module on my truck. Have no idea what it looks like and where it's located.
The RKE module is located straight above the gas pedal. The module is black with one electrical connector and the antenna cable inserted in to the side of it. If you need additional help diagnosing the door locks then have...
How long does it take to remove and replace a throttle?
Hi there If the throttle sensor is not working, it's most likely caused by an electrical issue; as opposed to a mechanical problem with the throttle body or other components. The best thing to do is have a professional mobile...
windshield wiper missing spots
If the missing spots are within the area that is actually swept by the moving wiper blades, that means the spring tension on the arm is inadequate. Sometimes the spring that provides the tension will get rusty and sometimes the...
Reduced engine power light keeps coming on.
When a fault/error in the transmission or engine triggers the Reduced Engine Power Warning Light, the vehicle will experience an extreme loss of power and performance and vehicles may not be able to exceed speeds greater than 20 miles per...
when car is running, squeaking is coming from the right side of the car when idle
A quick diagnostic can be performed by simply taking all of the belt driven accessories out of the picture by disconnecting the drive belt(s) and then very briefly running the engine. If the sound disappears, the faulty component is then...

Related articles

A Buyer’s Guide to the 2012 Lincoln Navigator
The The Lincoln Navigator was the flagship luxury SUV which laid the roadmap for its followers such as the Cadillac Escalade and the Lexus LX. Lincoln truly adhered to a philosophy of “go big or go home” on this 8-passenger...
The 5 Safest Used Cars You Can Buy For Under $20,000
The Subaru Legacy, Honda Accord, Ford Fusion, Chevy Volt, and the Volvo XC60 are five of the overall safest used cars you can buy for under $20,000.
Understanding the Lincoln Intelligent Oil Life Monitor and Service Indicator Lights
Car symbols, or dashboard lights, are a car service reminder. The Lincoln Intelligent Oil Life Monitor indicates when and what service your car needs.