When I was disputing the height, Bilstein sent (via Larkspeed) this information...
I’ve spoken with Eibach and their official data collected post fitment of their pro-kit during development was;
Front 348mm
Rear 358mm
These are from wheel centre to top of arch lip and also carry a +/-5mm tolerance.
My car is (as best I could measure) 364mm, so at the top end but basically within tolerance (+1mm). Eibachs are supposed to drop the car by 10mm. So on standard springs assuming the same tolerance at the rear 368mm +/-5mm