Lowered it on Eibach Pro today. Actually we lowered two Astra AHs today, from 10am-17pm.
The front got lowered more than I expect, here are some numbers:
The height was measure from the TOP edge of the wheel arch to the TOP edge of the wheel centre cap.
Left Right
Front before: 348mm 349mm
After: 304mm 306mm
Lowered: 44mm 43mm
Rear before: 338mm 334mm
After: 311mm 309mm
Lowered: 27mm 25mm
they will settle in one week or two, till then it will like Sportline Kit.
time to learn how to avoid scratching the front lip.....