Zero, glad to read your feedback on the spring rates. I have a 09 328i xdrive and I am close to ordering the FA500's with Swift springs and all the extra goodies. After reading your feedback though, I may go lower on the front and higher on the rear But I'm not sure if it will work out the same from RWD to AWD. I've been doing suspension math for the last few days so my head is spinning...
It seems that an 8k/12k setup keeps the same relative spring ratio from front to rear the same, I just am worried its still going to be oversprung.
I want as stiff as I can go before "pogo-ing".