I have a 1999 Audi A4 Avant onwhich I have put 'SuperSport Coilovers'. I am verypleased with the look of it after lowering it. However, the rears are squeaking like crazy and drive me mad everytime I drive. Its not just over bumps it's pretty much all the time! Especially if Im going quite slow i can hear a constant squeaking/creeking sound. It isnt as bad when driving at speeds and always seems worse when it is wet.

Can anyone help me and give me some tips on howto stop the noises or will i just have to put up with it?

 

Its probably not the coilovers, rather its more likely the control arm bushings. Spraying the heck out of them at the car wash can help, and then jack up the rear a few times and soak the heck out of the bushings with pb blaster.
I did this on my front control arms, and it worked like a charm. It took a few times, over a period of months, but now I no longer have any squeaking whatsoever.