Nick we measure ride heights a bit different than some others. We feel ours way is the most accurate and takes a lot of the variances out of the equation. The springs will work fine with any size rim, it just means there is a different number for the ride height.
With 17" rims the fronts would be 642mm and the rear would be about 612mm
With that said, this is a new product and I have not personally verified the heights, I want to get a car in for an install to verify everything, i will be making a separate post about that for people in my area.