some of the installation tips for suspension set ups i had:
most shocks are fairly easy to replace, but bmw struts can be tricky. on older import vehicles that have cartridge-style struts, it is not always necessary to completely remove the struts to replace the cartridges. there may be enough clearance to swing the top of the strut out from under the fender once the upper mount is unbolted. on some, a spanner wrench or pipe wrench is needed to remove the body nut from the strut. on others, the cartridge can be replaced from above with the strut in place once the upper bearing plate has been removed. and another part that may need to be replaced when changing a strut is the upper bearing plate. the plate supports the weight of the vehicle and serves as the upper steering pivot. a bad bearing plate can cause steering stiffness, noise and poor steering return (memory steer).