ok i have just got an idea from someone on here for a possible upgrade of brakes.. i have a pair of big brake discs for a 5 series,original bmw ones ,now been told they would bolt straight on no problem! but calipers would have to change. now is it just a case of getting bigger calipers?would it not affect the wheels? is this possible to do? these are in the for sale thread. anyone done this. i see that people have done others,i don't want to go any other route,the only reason I'm asking is because i already have these discs.. hope you all can shed some light on this for me..