Hi All My S4 Avant now needs discs and pads all round. My friendly mechanic is quoting about £800 as he says that if you use non-genuine parts they are prone to squeeling a lot. I don't want to cut corners on brakes as they are so important - but £800 is too much. I am pretty good mechanically and have no problems working on cars (having raced & built cars for years!), but does anyone know if changing the discs is as simple as it should be, or are there any special tools needed? Also does anyone have any recommendations on makes & combinations of discs/pads to use or avoid? Any thoughts appreciated.