A cautionary note to all early C5 owners.

Lost a rear rebound rubber in 2011 replaced it and bought a couple of spares at the same time to add to my "just in case" box of bits. Now when I checked the box contents at the weekend I found the rubbers had disintegrated in their packet into a pile of stuff resembling coarse sand.
Horrors, so while the wife checked our available credit, I slid the belly under the C5 and checked the rubbers, but both seemed ok. Whew

So then a warning to all owners of early C5s. Check the rear rebound rubbers, dig at them with a thumbnail or such. If pieces break off or they show signs of crumbling, replace them, before you do a serious hurt unto the spheres. And stay lucky.