I have an 07 Road King standard which has 13,000 miles. It looks like I still have pad material front and back as I rack up many highway miles. I use front/back equally to brake. Anybody have an idea how long the pads will last based upon personal experience? I am getting a slight squeek from the rear when I first start off from 0-15 MPH. No noise when I apply the rear brake though. I am thinking I may have a stone or debris stuck in the caliper or drive belt causing the noise. Don't want to ruin the rotors though if my pads are shot.