i am just about to start a track build on a e34 535 sport, i can't afford to go down the coilover route so i'm going to get some springs made to my spec, the only thing i'm stuck on is the spring rates, i'll be running standard sport shocks to start with then upgrade to some decent adjustables later on when i get some cash together, if anyone knows what rates i can aim for the help would be aprechiated.