Rolling noises are relatively frequent on vehicles, both for a smart forfour and for another model. But in practice, a certain number of elements can generate bearing noise. In any case, those are dysfunctions that need to be addressed. We will see through this text what will be the most frequent rolling noises on a smart forfour, and what to do to remedy it.
Rolling noise front or rear wheels on the smart forfour
First, it is important to understand the nature of the noise. If it is a noise coming from the engine, we will see that in the next paragraph. Here we will see the rolling noises coming from the wheels of the smart forfour. It's a problem that can happen similarly front, rear, left or right wheel . In general, it is a thud , quite similar to the sound that the wheel naturally emits, but more intense and more serious. This noise should be pronounced when you turn in one direction, unless both sides are damaged. If this is the case, this noise may come from the wheel bearings. There is not much to do in this case, you just have to replace them. Be aware that a locked bearing can cause the wheel to come to a complete stop. Performing repairs yourself requires a number of specific tools. The best thing is to have a lift to raise the smart forfour.
Rolling noise from the smart forfour engine
Even if there are bearings everywhere in a smart forfour, there are a few components of the engine that are more conducive to generating this noise in question. Usually it is either the pulley of the water pump , or the pulley of alternator . In both cases, it will either replace the bearing only, but we are necessarily more serene by changing the entire kit.