I was looking for some guide here as this noise is driving me mad.

Purchased a 2009 A5 few months and was aware the 4 shocks needed replacing at time of purchase.

Replaced all 4 corners and the ride has been transformed back to how it should be from factory.

There is no noise on the rear until I put 2 passengers in rear and it makes squeking noise going over the slightest bumps. If no passengers in the car I only hear the noise if I drive over a steep bump. Its not a knock sound but more like 2 baloons rubbing.Its like the weight of passengers in the rear makes the noise worse.

I have replaced the front strut mnth but not replaced the rear as i uderstand these don go bad or do they... but there was no noise before I replaced the shocks but just bouncy ride. The shocks I removed was completely dead and had no resistance.

The replacement shocks are brand new Sach.