hi everyone..hope someone can help.. my s1 rs turbo needs the rear springs changing... the car sits lower than the standard height but i have no idea how much lower it is compared to the standard height.. i wish to keep it at the height its at now though... could anyone give me some measurments of a standard one please..i would take the measurement from the ground up to the centre of the bottom of the rear arch...i think that makes sense...this should give me a rough idea...unless someone can point me in the right direction on a better way of doing this..!... i have seen springs at 25mm,30mm 40mm and 60mm ..i dont think its lowered by 60... more likely 40...please help,,many thanks