[Nai01]

Hey, has anyone else had this with their X6, I have about 3000 miles left on my brake pads, so would like them replaced in the next month or so. My garage is saying I need to also have my discs replaced at the same time, even though the discs do not 'need' to be replaced. Does anyone know why this is? If I ignore their advise and only get the brake pads done, will it cost further down the line?
Anyone's experience in this would be greatly appreciated. Thank you.