I recently developed the brake caliper/pad rattle on my ’13 570 LE. Since it only has less than 400 miles on it, I had not experienced it yet. It sounded like something in the rear differential was ablut to grenade!! I got on the forum here and did some research. I decided to look at the rear brakes and see what I could find. Sure enough the pads and calipers were loose like I have seen posted. I had seen posts about shimming the square holes on the pads with beer cans and that seemed pretty flaky to me……after all, I had paid right at $13,000 for this thing….its got less than 400 miles and now people are telling me to fix it with old beer cans???? I don’t even drink canned beer…….WTF???I did some more investigation on my own and found that on the inside of the caliper, in line with the top pin that goes thru the square hole in the pad, there is a 3/16" allen set screw. I played with said screw and found that by turning it in (tightening it) that it moves the caliper to take up wear in the pads. I put the shift lever in neutral and tightened the set screw up until I couldn’t turn the hub by hand. I then backed the set screw out approximately 1/4 turn until the hub was free again. (no drag) Repeated for the other side. By doing this, it takes the slack out of the pads where they meet the pins. Threw the tires back on and went for a spin……….No more rattle!!! And the brake pedal doesn’t go down as far anymore!!! This is the proper way to fix this problem. I will add it to my regular maintenance procedure and bet I never have the problem again. I agree that the beer can fix would probably get rid of the rattle, but……..No offense or disrespect to anyone that came up with the beer can fix, but why not just do it right and be done with it?