I don't know if OP is talking about original set of pads or replaced (at that mileage I would think replacement). If non LR pads, then you may want to check the formulation with the manufacturer site. I wanted a set of replacement pads for my Audi and Hawk Performance listed three grades, original, track and ceramic. I went with the mid grade and had squealing when braking even after double checking rotors were clean and anti squeal grease used. Checked with Hawk and turned out the track pads I bought were known to be noisy due to the formula but as they were "designed" for track use, that was expected price for that kind of grip and application. Switched out to ceramics and noise went without anything else done. My assumption had been buy better stopping power than OEM and it caught me out. As others said it may be rotor issue - if you don't replace them, it's pretty cheap to get them refinished at your parts store - mine charges $15 each and is done in an hour. This would remove any previous brake material which might be helping make the noise with the new pads. Unless the rotors are out of spec I generally find new rotors every other pad change works fine. On the UK Discovery forums there have been many reports of non-LR rotors warping after a while but there are more non-V8 over there. Hope some of this helps...