Listening noises from your automobile often is never comforting, so discovering noises on your Bmw Serie 5 suspensions when you pass a speed bump can be worrying. This sign may be a sign of a small issue as well as a warning of a much larger repair to come. In any case, it is important to check the origin and take the necessary actions to resolve the issue, it is with this goal in mind that we wanted to write this article to support you see more clearly. We will first see the possible explanations for a crack when the speed bump passes, then, what can be the reason of a squeaking noise when a speed bump is being passed and finally what to do if you have another noise when a speed bump is passed.
Suspension cracking noise Bmw Serie 5
Check Bmw Serie 5 suspension
If you notice a suspension noise when you pass a speed bump on your Bmw Serie 5, and it is categorized by a “clack” or cracking, it is highly plausible that your suspension block is the origin of it. In fact, it may be the suspension cups, which, when they are old, have the rubber (silentblock) that acts as a buffer and shock absorber for the upper part of the suspension that no longer fulfils its job during small bumps that compress the suspensions. To verify if this is the issue that worries you, take a dented road and listen to the noise coming from your front axle as you pass over holes. If it is indeed the cups, think of replacing them fairly quickly or you may damage other parts and have to make more important maintenance.
Check the cardan shaft
If you are here because you have searched for “Bmw Serie 5 suspension noise” and the suspension is not the cause of your problem, it may be that the cardan shaft is responsible. In fact, when the cardan bellows get old and the dirt/dust builds up inside them their operation is deteriorated and it is possible to experience a noise when they are in torsion. To verify this, you can try both types of torsion, first vertical with suspension compressions on the speed bump passages, and horizontal when you are going to turn at low speed. If it cracks in these two conditions you should consider swapping it or them. If you have the feeling that this noise is more like a a loud noise on Bmw Serie 5, don’t hesitate to refer to this document.
Check steering hinges/stabilizer bar
Finally, when you know a suspension noise when your Bmw Serie 5 passes over a speed bumps, it is plausible that the hinges or the stabilizer bar are responsible. Simply like the gimbals, the steering part is mobilized when you adjust direction. If this is the situation, the parts that may have been destroyed by normal wear and tear or impacts (e. g. sidewalks). The steering hinges, the stabilizer bar hinges. can be the origins of your noises, to verify it, position it under the car and apply twists on each of its components to verify that there is no special play on one of them, they are expected to resist you quite strongly over their entire travel. Please remember to take your vehicle to your auto mechanic or replace them if they are involved.
squeaky noise speed bump Bmw Serie 5
Check the stabilizer bar
If, on the other hand, you have a noise that is more like a squeak when you pass a speed bump with your Bmw Serie 5, it is plausible that it is the stabilizer bar itself that is concerned. In fact, abnormal/pronounced wear of the latter can cause uncommon friction which can provoke this squeaking noise. Bear in mind to verify by passing under your car the condition of the paint on your bar which will show if there is friction. Second plausible point, it may be your stabilizer bar silentblocks that are dried out and cause noise, in which case disassemble them from the cradle and grease them, this should solve the issue.
Check engine silentblocks
Finally, last point that we can verify together, it is the engine silentblocks, actually, these silentblocks operate as pads/shock absorbers between the engine and the cradle of the automobile, a evident weakness of these will create a subsidence and therefore a space between the engine and the silentblocks, it may happen that a squeaking noise happens when you pass a speed bumps or any holes with your Bmw Serie 5. To replace them go to your auto mechanic.
Other speed bump noise Bmw Serie 5
If, despite all its assumptions, you still can’t find the source of the noise your Bmw Serie 5 makes when you pass a speed bump, we recommend you to consult this article on a loud noise on Bmw Serie 5 or to visit your auto mechanic in order to carry an in-depth check on your Bmw Serie 5 and identify this issue.
