Skip the auto shop - Our mechanics make house calls

Q: Left back is grinding and wobbling like crazy, what could it be?

asked by on

Was driving home, back left side started grinding and wobbling horribly. What is wrong?

My car has 198000 miles.
My car has an automatic transmission.

A: Hi, thanks for writing in. So long as the w...

Hi, thanks for writing in. So long as the wheel and lug nuts are tight, the most common cause for grinding is worn brake pads or shoes, depending whether your vehicle has rear drum or disc brakes. When the brake friction material is worn away, the metal backing plates of disc brake pads or drum brake shoes, will start rubbing on the drum or disc. That will give you a grinding sound and vibration. Continued driving will cause more damage and will likely become a safety hazard. If you would like help, consider having an expert automotive technician from YourMechanic come to your home or office to perform a brake system inspection for you, and make or suggest the necessary repairs needed.

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

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: Camshaft position sensor keep failing after i replace it. after 2 miles the check engine comes back on for that sensor 2003 BMW 745Li

Hello - you don't mention the specific problem codes you are getting, but the problem you are having may not be the cam sensor itself. Rather, the problem could be the "v-shaped" timing chain guide between the cylinder banks. This...

Q: Adding cruise control on a factory non equipped car.

The unfortunate truth is the dealer is correct. What you are doing is in theory feasible but not common at all. I haven't run across anyone who has done what you are doing and I have often wondered how such...

Q: What are the signs of brake wear?

Your car has four-wheel disc brakes, which means that each wheel has a rotor and brake pads. There are no drum brakes on your car. In addition, your pads have what are called “audible wear indicators” or “squealers”. These...

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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
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.