This is not a Canadian/American car - BMW designs the rotors to be replaced with the pads and are not designed to be refaced - they are too thin to safely machine down - check out the threads about brakes here - rotor replacement also requires the replacement of the brake sensor - pads (4 sets), rotors(4), and sensors(2) are required for a complete brake job - it also would not hurt to have brake fluid and lines checked out

__________________
Mark _______________________________
2001 X5 4.4i topaz blue/sand Sport, complete Dinan S2 , hitch, V1, tint, BSW Stage 1, Alpine INA-W910BT
___________
Life is not fair!
You can't protect people from their own stupidity!
Laughter makes life worth living