any1?
I found the program i need to work out what rates i want, just need to figure out what ive got now.

i think ive done it wrong working it out?

i did it by measuring the floor to wheel arch, then i stood on the turret and remeasured, it dropped 8mm.
to make the car drop 8mm with 80kg = 10kg per mm
10kg/mm = 560 lbs/in

that seems very high to me so guess i did it wrong lol

any1 got any other ways of doing it?