ok first you need a 19mm socket take off the tire then Get a 17mm socket undo the 2large bolts Behind the Brake caliper It holds the whole setUp on then get a flat head ((if you have the the 2screws in the rotor undo the)) pull off the rotor your done then pop in the new studs its about a 15min job that will cost you 100bucks if someone else does it.16 if you do it yourself 4bucks each for the studs