hello mate well i have 17's with 205/40 tyres and its lowered 40mm and it only rubs on the back right wheel but thats because for some reason it sits lower that side!!, however i personally think that 40mm is too low and hard ive gone for a 30mm drop with 16's and its fantastic, with adjustable track control arms and stiffend anti roll bars hopefully, will handle like a troper mate.