Do you listen to a metallic noise on your BMW 4 Series when ever you drive? We understand that this is not enjoyable and that you are wandering. Discovering such a noise is not always a good indicator, but it may also be nothing major. To help you eliminate this trouble, our redaction decided to create this content to help you in this investigation. In order to accomplish this research as accurately as possible, we will first check out the conceivable sources of metallic noise in the front of your car, and then, if the metallic noise comes from the rear of your car.metal-noise-bmw-4-series

Metal noise BMW 4 Series coming from the front end of the car

I listen to a metal rattling noise coming from wheels

  • Metallic noise originating from your bearing
  • One of the probable triggers of metal noise manifestations on your BMW 4 Series, may be that one of your bearing is tired, it will frequently make a loud noise that increase when stressed (turns faster and faster). So keep in mind to check by taking speed (neutral gear and window open to be aware only to noise of the wheels) that the noise is well located here, if this is the case replace it or them promptly. If, on the other hand, this noise only manifests itself with an engaged speed, examine this guide on loud noise on BMW 4 Series, you will most likely find a remedy to your trouble.

  • Metalic noise coming from brake
  • If you discern a metalic noise on BMW 4 Series and you have the feeling that it comes from your front wheels, it is highly conceivable that it is your pads or discs that are the trigger. In fact, a disc or a set of dead plates will make a strong metallic friction noise that you will inevitably feel. To check this, put your car on safety stand, and check the condition of your discs and pads by getting rid of the wheel. If they are involved, replace them promptly , otherwise you will no longer be able to brake. If you encounter a metallic noise from your car, and you want informations about it, browse this article for more information about brake noises on xxx.

  • Stabilizer bar worn
  • If it is rather when you are turning, passing over a bump or sidewalk that you listen to a metallic noise on your BMW 4 Series, then your rods may be worn. Whether it is the steering or the stabilizer bar, their wear will induce a metallic snap when they hit or change direction. To check this, put yourself under your car, without the wheels, and move your rods, if they only oppose very little force it is likely that they will have to be replaced. If this is your case, we would suggest that you consult this content for a complete guide about steering noises on BMW 4 Series.

Other sources


  • Engine silentblock
  • A little like worn stabilizer bar, if your engine silent blocks are damaged, you will feel as you pass over damaged roads or sidewalks, loud metallic noises on your BMW 4 Series. Once screwed up, they will no longer accomplish their task as shock absorbers and, with each impact, or violent acceleration, a noise will come out. Therefore, take into account to check their status and replace them if needed. Feel free to have a look at this content which is a complete file about strut mounts noises on BMW 4 Series, how to check their condition and replace them.

  • Dead gearbox, or broken pinion
  • Finally, the last basic trigger of metallic noise on BMW 4 Series. It’s because your transmission system is the origin. It is plausible, either because of improper use of the gearbox or because of excessive wear, that some gears in your gearbox have broken and are wandering around in it. They will then create a continuous metal rattling sound. That you shouldn’t feel in neutral. If this is your case, we would suggest that you read this detailed guide on the origins of steering noises on BMW 4 Series.

Metallic noise BMW 4 Series coming from the rear end of the vehicle

Exhaust pipe

If, on the other hand, you notice an exhaust noise that is more of a metallic type, it is conceivable that one or more parts of your exhaust may be damaged. In fact, it is conceivable that either the catalyst or the silencer may be the trigger of this sound. To be sure, go under the car, cold, and knock each of the previously stated units with a hammer to discern the origin of the noise. You should notice things moving in the problematic part, if it’s the exhaust baffles, you can try to hammer in the section a little to try to block them and limit their movements. If it is a dead catalyst, it will be necessary to consider changing it, as well as the silencer. In this instance, to stop the metallic noise on your BMW 4 Series, you will either have to find a second hand one and do it yourself, or go to your mechanic.

Noise from wheels

  • Bearings
  • As for the bearings of your car, it is conceivable that with wear they are at the origin of your metallic noises on your BMW 4 Series. Go a little further up in the document where you will find information of the solution already exposed for the front part of the car.

  • Brake pads or discs
  • Finally, if the noise originates from your discs brakes or pads, you should refer to the part in question in the first section of this manual.