how harsh are we talking of a ride on the street with 400/800? Im in the market for coils and have an option to essentially get springs in the any stiffness i want due to order the coils straight from the manufacturer. I plan on going pretty low once the coils are on and want a pretty stiff ride although not rock hard. I live in Santa Barbara (soCal) so i might be at a few track days but nothing crazy. recommendations?
Also the coils im looking into are BC Racing and I can only seem to find the stock spring rates for those coils in 7k/11k. How would I translate those numbers into pounds?