Were is that info from dave ? , I could be wrong but I remember reading a thread on bmw5 that eibach never made a spring specifically for the 530d if you wanted springs for the diesel you chose the v8 springs all e39 saloons are the same on the rear but the i6 diesel blocks weigh roughly the same as the v8 petrols so sellers of eibach springs just started listing them in two groups

(520,523,525,528,530)
And (535i,540i,525d,530d)

Eibach dont make springs for the m5 either so id question that chart to be honest, if you look up the part no.s listed on the chart using eibachs part catalogue they dont exist

Open to correction read it a long time ago memorys vague at best