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.

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: It is very hard to put my car into gears been told it needs to be adjusted

This may suggest the transmission synchros may be wearing out. Your transmission has small gear synchronizer rings that help to move the transmission in and out of the various gears. When these begin to wear out, you may notice it...

Q: I have power to my coil packs but I am not getting any spark

If you scan the computer and monitor the crankshaft and camshaft sensors, you will see one of them not working properly to send a signal that the computer will use to make the coils send a spark. You will not...

Q: Car accelerating on its own

Hi. The first thing I would look towards is a problematic accelerator cable. I would recommend checking the accelerator cable for defects, kinks, and miss adjustments. If that is found to be the problem, have the accelerator cable replaced by...

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...
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.