Replacing the front discs

 I have noticed more and more vibration on braking, to the extent the mirrors shake.  I could feel a high spot on the disc pulsing under braking, but nothing was obvious.  I checked the torque on the fasteners, but all was good.  Quality replacement discs are NZD$488 EACH!!!!, and I managed to get a 3,000 mile set from EBay for USD $119.  A good quality allen head socket, and half an hour later all done, loctited on and re-torqued.  Perfect brakes again.  I didn't realise how bad they were until the problem was sorted.