Car Vibrates Between 30 And 40 MPH (Causes & Solutions)

Vibration in a car is one of the biggest worries one can have, especially when you are driving at a specific speed. You know, vibration in cars is normal somehow, but not when it happens all the time.

In this article, I will be talking about vibration in cars, especially when a car vibrates between 30 and 40 mph.

Why Does Your Car Vibrate Between 30 and 40 mph? – Main Reasons

A car vibrating between 30 and 40 mph is a result of lots of reasons, but don’t worry! I will mention everything you need to know, along with some specifications on fixing those issues and having again a car that doesn’t vibrate at all!

Some components make a car and in the vibration part, those components such as the tires, wheels, brakes, suspension, engine, and transmission are those reasons that lead to vibration at 30 and 40 mph.

Let me mention everything you need to know about them!

Also Read: Why Is Your Car Vibrating in Drive but Not in Neutral


Tires are the first things to check out when you notice vibration between 30 and 40 mph when driving, but still, there are some specifications in the tires that play a role.

Your car may vibrate between 30 and 40 mph in tire issues such as tire wear, tire type, and unbalance in them.

Worn Out Tires

Depending on how much time has passed since you have changed your car’s tires, the time comes when you notice that they are the main cause of vibration in this specific mph.

When the tires you use are completely worn out, your car will vibrate between 30 and 40 mph easily, and not only! It will vibrate at different mph.

Winter Tires

I know it may sound weird to say that winter tires cause an issue of vibration, when in fact it is one of the main reasons why your car vibrates between 30 and 40 mph.

It happens because the material of a winter tire is different from all-seasonal or other tires, and it is not an appropriate type of tire to use at any time you want.

Unbalanced Tires

Balance of the tires is one of the most important things you should have in mind before starting to drive a car, and that’s because the tires (and the wheels) are some of the most important parts in a car that can lead to a good or bad drive.

When I say bad drive, I mean the vibration that may happen and it is in fact, the main thing that can happen when the tires of your car aren’t well-balanced.


Another thing that leads to vibration between 30 and 40 mph is the wheels of your car, related to the tires as well.

When any part of the wheel such as rims, hubs, barrels, and flanges aren’t put precisely in their places, the wheel gets out of balance and doesn’t attach properly to your car, the normal thing to happen is vibration.

Even though it may sound like it is too simple, not properly attached wheels can also lead to other problems with your car.


Brakes are some other super common reasons why your car may vibrate when you drive between 30 and 40 mph. Especially, if you are slowing down at a higher speed.

Whenever you press the brake pedal, the brake fluid has to go onto the engine and whenever it is not going properly there is vibration. In this case, vibration is also followed by a slightly weird noise.


The suspension of a car refers to the part that attaches the wheels and the car, which once again relates to the whole attachment of the car, wheels, and tires. I know it all leads to the first reasons I mentioned, and that’s because they are super important.

Anyways, the suspension relates tightly to the fact that it is a responsive part of your car’s stability, and when there is no stability, there is vibration.

Most of the time, the suspension in your car can be degraded over time and it can be worn out as well, and it gives vibration as a signal of replacement.

Engine and Transmission

Two other super important things to have in mind when your car vibrates at 30 and 40 mph stand on the whole engine of your car and the transmission problems it may have.

In terms of engine problems, the reasons are the filters (which may be clogged) and spark plugs (with oil and carbon build-up).

When it comes to the transmission, it is mostly related to the gears you may change when driving and all the power your car needs when doing so. Transmission, more exactly said, not proper transmission can lead to vibration not only at 30 and 40 mph but at other speeds as well.

Easy Fixes for Car Vibrating Between 30 and 40 mph

When you know the reason for vibration, there is no doubt that you search for a solution, and something I want to add for you is to tell you in short words the things you can do.

TiresReplacement, Choose the Right Types and Balance Them Properly
WheelsAttaching Them Right and Checking Every Part
BrakesCheck the Brake Fluid
SuspensionCheck for Damaged Parts

When you have doubts about engine and transmission issues, the best thing to do is talk to a mechanic, and tell them your doubts, because they are more complicated.

Also Read: Is It Really Bad to Floor Your Car?

Final Words

A car can vibrate because of lots of reasons, but when it comes to vibrating between 30 and 40 mph, things change a little bit and there are specific reasons such as all the things I mentioned above.

Still, the good thing is that everything I included and every part of the car that I mentioned above can be replaced with another, and you can fix this problem easily. Of course, while going to a professional mechanic!

I hope the things that I mentioned are all understandable and helpful to you! Good luck!