They seem to hit full compression regularly on moderate sized road bumps (they have always done this to some degree, but not as much as my old Cobb springs that I had around 5 years ago).
When I took the pic of the Yellows and showed it to a few friends, one of them thought that they didn't look right (as in, they shouldn't be so compressed when the car is parked like this).
Perhaps they are not stiff enough for the height, or ideally would have fewer coils, so that road bumps wouldn't cause them to crash into themselves ?