896 Knocking noise from rear quarter passenger side

[kouros]

I have been experiencing knocking noise from the rear quarter of the passenger side....this noise seems to be worst when driving around 15-20 mph around the bumpy urban street.

The knocking seems to be more evident when the car is cold and in the mornings.

I have already changed the passenger side longetudial arm .... yet it only dampened the noise and did not eradicate it.


Any clues ?

Many thanks