CITROËN XM SALOON / ESTATE - ALL MODELS
Unlike its predecessors, the XM range has either 7 or 8 suspension spheres depending on age of car. It is important that these are replaced (as a minimum) in front or rear groups since the centre spheres when fully charged control the softness of the ride when in comfort mode.
It has been found that XM spheres require replacement at more frequent intervals than other models, possibly due to their small size in relation to the car's weight. If your car is aged 1995 or earlier it will almost certainly require replacement of all seven spheres. Certain models, i.e.V6, 3-litre and 24 valve cars have extremely inaccessible hydra-active and anti-sink spheres incurring slight additional labour cost.