Q: Car noise at higher speeds on slightly rough roads

asked by on June 27, 2016

When I drive my Benz GLK350 4MATIC at higher speeds, like 95-115 mph, I notice the deep humming noise if the road is even slightly rough and bumpy. The noise seems to be echoing through the car. At completely even roads, there are no sounds at all. I had tires replaced with new, high-quality ones, but the noise is still noticeable when the road is not perfectly flat. What could be making the noise?

Hello there, many different items can begin to cause noise at this type of speed. In many cases this is not noticed as the highest speed limits in most areas is 85 MPH. The most likely cause is body noise, interior panels rubbing, struts, wheel bearings, or the tires themselves.

If you’d like a second opinion on this, consider enlisting a qualified technicians who can diagnose the sound you’re hearing. An accurate repair can then be made once the issue has been pinpointed.

Was this answer helpful?
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

Grinding noise and backfiring during startup

The starter on this vehicle requires a shim, so its possible that got left out when the starter was replaced. This could cause starter engagement problems and the metal on metal noise you're hearing. Backfiring, on the other hand, is...

Air sucking noise at low RPM during acceleration

Inspect the inlet air tube between the throttle body and the mass airflow sensor. You most likely will find that the tube may be loose, has disconnected, or has cracks in the hose itself. If it is damaged then replace...

Whining sound accelerating

Hi there, thanks for writing in about your 2007 Volvo V50. On vehicles similar to yours, a whining or whistling noise coming from the engine can be the result of a malfunction in the positive crankcase ventilation system. When the...

Related articles

What Components of the Suspension or Steering Systems Are Prone to Fail?
In In automotive usage, the term "suspension" refers to all of the parts that connect the vehicle to the road. Every car, truck, and utility vehicle has a suspension that is designed to do three things: Support the vehicle...
My Tire Has a Nail in It. What Should I Do?
If you get a nail in your car tire it is dangerous to drive on. If this happens to you use a tire plug or patch to repair the tire, or buy a new tire.
How to Check If Your Tires Are in Good Condition
Tires Tires are the foundation on which your car or truck rests. Checking if your tires have good tread and suitable pressure will improve your car's handling, gas mileage, and general tire life. Here's how: Assess how much tread is...