i had 17s on mine when i first bought her, lowered on racelands too, dont know how much by but it was practically undriveable previous owner must have been a right muppet, id estimate about 70mm low, raised up the front something like 20mm (cant raise the back as the p[revious removed the adjusters to get it even lower lmao) and moddified the arches with a hammer and it just gave the occasional scrape on bumpy corners, iv got 15 inch winters on at the mo but il be getting rid of the 17s for 15 or 16s after winter, in short i wouldnt bother as the drivability of your car will suffer