replacing shocks

[shanghaivzcalais]

i own a 2005 vz calais with 85000 kays on it,most of that has been 110 kmh highway driving,im wondering what the tell tale signs are 4 replacing the shocks, suspension,wheel bearings all that kind of stuff,does the car sag if a shock has gone? so yeah any help would be great

[Escape-The-Fate]

noise (thump or knocking sound which i had in the front of mine), not always but legthend braking distance/shudder under braking (shudder can also be warped or stuff discs though) or if they are really buggerd when you go over a big enough bump the arse hits the bump stops

[Boonz]

push down on the quarer panel and watch if the car bounces up and down more than once when you left go... usually shocks should be replaced every 60,000 or 3 years to be in good working order