creaking suspension

[boxer 01]

hi I am just going to explain a rather annoying problem which has been on my car for a long time on and off, the problem being an annoying creak from front passenger side when brakes are applied also when steering is turned also there when going over speed bumps. the noise seems to disappear when its raining, all ball joints have been checked and are ok.
I would be grateful if anyone has any ideas as I am reluctant to take it to main dealers.
w211 e320cdi sport 2007.
regards
boxer

 

[Dieselman]

Ball joint on the n/s.

Try pressing down on the wing gently, while listening.

 

[Justin1600]

Front ball joint is creaking, as Dieselman says will be doing it under load

 

[boxer 01]

I was originally told the ball joint but for some reason this changed. is there a precise way to check that it is defo ball joint.
regards
boxer

 

[Benza750]

Get a small spike & pierce the boot of the suspected ball joint use a lubricant with a straw & push into made hole, spay lube.
Move the suspension & steering and see if noise stops.
It is usually the bottom ball joint, the one that is stub axle, try that one first as you don't want to damage all the ball joint boots if you don't have to