looked under my car the other day, and both chassis rails are down to bare metal where it constantly bottoming out has worn away all the paint/underseal, the exhaust has taken a fair amount of grazes too, so i have wound the front coilies up about an inch, well, 21mm on one side and 26mm on the other, once everything had all settled properly after a few months it was a little uneven, although i know im going to have to set it all up again to get it mm perfect as the back is 9mm lower on the driving side, it was 12mm out before, but levelling the front has taken some of it out, but i bet once i get the back right the front will be out again, oh the joys of fully adjustable suspension.