Skip the auto shop - Our mechanics make house calls

Q: The car vibrates at a certain speed

asked by on

The car vibrates when the speed reaches about 50 MPH and it continues until about 65 MPH. Then it goes away. The tires/wheels have been checked on numerous occasions. Have not had any success to finding out what is causing the vibration.

My car has 1000000 miles.
My car has an automatic transmission.

A: Hello. Since the vibration is vehicle speed...

Hello. Since the vibration is vehicle speed sensitive, it is likely that it is related to the wheel/tire assemblies, driveline, and/or suspension. An expert would sequentially look at these systems to isolate the problem. The causes can be quite surprising.

A weak or failing shock or strut can account for this. In one notable case, I had a car equipped with new Dunlop tires that vibrated terribly. The tire/wheel assemblies all checked out perfectly on a calibrated balancer. It turns out the tire sidewalls were just too stiff in for that car’s specific suspension. Switched to Michelin tires and the problem disappeared instantly. You could try to have the wheel tire assemblies evaluated on a "road force" type balancer which accounts for variance in sidewall stiffness.

Tires might have unusual wear, often due to lack of rotation or misalignment, and this can cause vibration. If your wheel bearings have more than .002 inch of play, that could cause it as well. There could even be an issue with an unbalanced CV shaft or driveline, or loose u-joints.

Brake rotors or drums could be out of balance. To cover that possibility, you could try re-indexing (by one or two lug positions) the rotor or drum on the hub (try one wheel position at a time) to see if there is a reduction in the vibration. For help having this addressed appropriately, a professional from YourMechanic can conduct relevant tests to diagnose the vibration issue and advise on a repair.

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: Leaking power steering oil

You do have a leaking power steering system and if you cannot locate the leak then it may be collecting in the inner tie rod boot and leaking from the rack and pinion side seal. If you're unable to pinpoint...

Q: Crank no start

Hi there. If by indicating that "you just replaced" all these components means that literally you're working on them now, and you didn't have this issue prior to completing this service, there is really only one reason; something was not...

Q: car shakes hard when going 60 already replace all tires not sure if its a ball joint or tire rod or something making it do that

Firstly, it's important for me to know the model of vehicle and engine size in order for me to help you better. From what you've described, the problem sounds like it is in the drive train, like an axle joint...

Related articles

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...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
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...