Rear tires overheated to the point that it would burn a hand that touched it on 6-11-2012 (mileage 46,384). Smelled of burning rubber. Had to replace the left rear brake caliper, brake pad, and rotor. On 4-18-2013 (mileage 65,922) the same problem on right rear. This required replacement of the right rear brake pad and rotor. On 6-13-2014 (mileage 93,310) the same overheating occurred and required replacement of the rear brake pads. The latest occurrence was on 3-16-2015 (mileage 112,411). We have an appointment to have this examined in two days so do not yet know the diagnosis. I am very concerned that this failure could occur while we are driving and could result in a fire, blown tire, or crash.