I have no clue what you mean by wheel rates, but I am pasting them into the calculation request, and hopefully he knows what to do with them.
Thank you so much for all the info!
Keep in mind, I'm comparing to what is now a 23mm front and a 27 mm rear on the Mazda6 as set up, but at least the rear has a shorter span than on the Contour. Spring rates: 8kg/mm front 5.5kg/mm rear. I like it, but the guy doing the calculations thinks it's dangerously tail happy by the numbers.