Q: What causes black dust on the front wheels?

asked by on November 20, 2016

My car is making a dragging/scraping sound going forward, and a louder scrapping sound while in reverse. There is a heavy build up of blackish dust accumulating on the front wheels.

My car has 11100 miles.
My car has a manual transmission.

Brake Pads Replacement $125.62 - $449.32 Get a Quote

Hi there:

First off, the black dust on your front wheels is brake dust, which is created as the brake pads are applied to the rotor and stop your Subaru. This creates heat and friction which causes them to actually burn; giving off a black dust which collects on the wheels and brake pads themselves. The grinding noise is most likely caused by the brake pads being worn out and needing to be replaced as soon as possible. If they are worn out, they will eventually damage the brake rotors and could create a serious safety issue. To be safe you might want to contact a professional mobile mechanic as soon as possible to have them replace your front brake pads and see if your brakes require additional service.

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

What others are asking

Horn only works intermittently

Hey there. It sounds like the horn switch is on it's way out if you are having an intermittent issue. Another way to tell would be to see if the horn sounds with the panic button on the key fob....

Mazda 3 has no spark and won't start

Hi there. It sounds like there could be a fault somewhere in the camshaft position sensor, crankshaft position sensor, or engine computer circuit. Check all fuses and relays and replace as necessary. The computer will not enable spark to...

Drained the wrong fluid

Hello! Believe it or not, that has been done several times before on Subarus. The transmission drain looks very similar to the oil drain, so they can easily be mistaken for one another. Usually, the transmission will just have to...

Radiator is leaking - 2006 Volkswagen Jetta

This is definitely a sign of a leak in your coolant system. There are many different places the coolant may be leaking from. There are various hoses that circulate the coolant through the radiator and motor and these are common...

My 2006 buick lacrosse wont go past 60 mph when pressing on gas pedal

Hi Leslie. Thanks for contacting us today. In most cases, an acceleration problem like you've described is caused by either a fluid restriction in the transmission or excessive heat in the transmission. It can also be due to fuel/air mixture...

Major oil leak

Hi. Large oil leaks can be difficult to pinpoint because they get all over the undercarriage. The best way to find a leak is to clean off the engine and then add dye to the system. Running the engine with...

My car wouldn't start one day but started fine the next.

For this vehicle, the wiring harness connections on each and every module may have what is called "fretting corrosion", which will cause intermittent loss of connection in the module. A certified mechanic will have to go through each and every...

I'm losing power steering after replacing rack and pump

First you need to see that the fluid level is correct. Bring the engine up to operating temperature and check the fluid at the reservoir. Top it up with Pentosin CHF11 hydraulic fluid. The fluid gets foamy when it is...

Chevrolet Avalanche fuel pump replacement

Hi King. Thanks for writing in today. You can request an estimate to have one of our mobile mechanics complete the fuel pump replacement for your Chevrolet Avalanche by clicking this link to the service page](https://www.yourmechanic.com/services/fuel-pump-replacement). In regards to doing...

Related articles

The Best Used Cars to Buy for Families
If If it’s time for you to search for the top used cars specifically for families, check out the list we’ve put together of the top five. The list of must-haves Typical items that families are looking for in their...
The Best Used Cars to Buy If You Live in a Hilly Area
Do Do you live in terrain that is hilly? Do your city streets feature plenty of inclines and declines that can be nothing short of treacherous in miserable weather? If so, when it’s time to purchase a car you’re looking...
The Best Used Cars to Buy for Long Commutes
Most Most of us are faced with the prospect of commuting back and forth to work on a daily basis, but some have a much longer drive than others. When it comes time to buy a car, you need to...