e46 325i m sport ride height ?????????????

Hi guys I ma newbie here and newbie to BMW !

Im having a few issues with my car one being the steering seems to want to go all overt he place which i have been told is possibly wishbones ???

and the main problem is I think the passanger front ( left side ) i think has hada standard height spring fitted not m sport

does anyone know the correct ride height for my car i have been told t omeasure from the centre of the wheels to the arch

but i can find what height my csr should be all round ????

please please please help!!

many thanks
ryan