Looking to change front and rear brake discs and pads on my a3 2.0 litre TDI 16 v - 2006, my service book states car uses pr code 1ZE (288mm) For front and PR 1KD For rear (253mm) , found an excellent price for mintex box sets , total price £89.50 including delivery, cross checked on mintex site which says front pads mdb2604, rear pads mdb1377, and front discs mdc1638 and rear discs mdc1640, I contacted the supplier and he said front codes look right but rear uses two styles of pads so a bit confusing, any thoughts on this