My van has a lot of van racking in it and often there is load on top of that. The result is a suspension that hadrly works at all and the car is lousy to drive.
System Edström can offer you custom fitted sets of suspension that will work as auxiliary springs. The standard springs are left as they are in the car and the new springs are fitted next to the old ones. This means that the car does not have to go through a new MOT.