I installed 1144 pads about 2 weeks ago. I called BAT to ask what the rubber things were for. Their guy said they were for the "10% of cars that have problems with rattleing pads" (his words). I put them on my sticking them to the back of the pads and trimming off the excess. BTW - you might notice that it's impossible to stick one on the piston-side pads because the retainer clip (that slides into the piston) is in the way. So I only put them on the outside pads. I've had no problems since then. You will notice, however, that these pads are EXTREMELY dusty. I have to clean my wheels daily...
