yup unfortunately, my turbo's got creaky rear suspension, its had a new rear trailing arm fitted on drivers rear, and i'm pretty sure its the bolt that holds the trailing arm up that u fit the rear spring in which is squeeking or creaking cos it looks like theres a bush is there. if i take the rear wheel off and jack the trailing arm up with another jack u can hear the creaky squeeky sound.
Also if i drive around people look at yah cos everyone can hear this creaking sound, especially on speedbumps.

the car has 205/50/15 tyres fitted on the rear and i think these are touching the shock.

any ideas here or had similar problems?