I put the same eibach kit in my car last week. With stock isolators the car lower about 3/8 of an inch front and rear. The back was 28 1/4(measured centerline on the wheelwell) after the spring swap it is 27 7/8, that's with 295/35/18 in the back. I've let them "settle" all week and it has not lower a bit. I now have the eiach back out of the car and trying to decide if I want to cut a 1/2 to a full coil off them, or do the same to the stock spring, and send the eibach back and save myself some money.