Hi Guys.

Looking at replacing the centre rear sphere and have found a genuine new one I must have bought earlier and forgotten about. Question is, do they 'go off' with time and if so, over how long ? Can't see any hint of a date code on the box or the piece. For what it's worth, it is a genuine Citroen piece.

Mike.

We have loads of spare spheres off all kinds of Citroens, they rarely lose pressure when they are off the car. So they 'should' be ok, but it might be worth getting it pressure tested.