A4 is shaking

Hello,

I need your advice. My A4-B5 becomes very unstable at speeds of around 100 km/h. You can feel the whole car vibrating. The car has 141,000 kilometers on the odometer and has 17-inch rims.

The steering wheel is very stable, so I assume there's an imbalance in the rear tires. Or could this also be caused by the standard shock absorbers?

During the standard insertion test, everything appeared normal.

Thank you for your participation.

Rainer.

datsun wrote:

During the normal insertion test, everything appeared normal.

How does this test work?
Press down on the lever and observe the rebound.

-> Forget it. Simply because you never activate just one wheel's suspension.
Even if you completely remove one damper, the oscillation will be dampened by the other dampers that are also affected.
Only when both front or rear (almost) completely fail will you notice a significantly prolonged oscillation.

More specifically, these are shock absorber tests using single-wheel shakers, such as those performed by organizations like ADAC or TÜV.

I can definitely imagine that one of your mufflers is finished.
After a few thousand kilometers, you may (sometimes) see a wear pattern resembling a crown cap distributed on the affected part. Tires.

Hello Ulf and Co,


Thank you in advance for your input.

I went to the tire dealer today. Rear shock absorbers are good, but the front ones are mediocre.
It's probably something for the winter.

After that, we rebalanced the tires (not on the car). It probably contained quite a bit.
However, there seems to be a slight wobble. So far, I haven't felt any vibrations while driving. Let's see what the highway has in store for us.

See you later, Rainer.