1ST INCIDENT 2/21/13: DRIVING ON A 4 LANE HIGHWAY W/CENTER LEFT TURN LANES AT 40 WHEN A CAR CUT ACROSS FROM THE RIGHT TO MAKE A LEFT TURN. HIT THE BRAKES CAUSING THE FRONT TO LOCK UP (REAR ABS ONLY). TRUCK STARTED STOPPING, BUT CONTINUED MOVING FORWARD AGAINST THE FRONT BRAKES AND INTO THE CAR. TRUCK LEFT UNUSUALLY LONG SKID MARKS. POLICE AND INSURANCE REPORTS MADE. DAMAGED TO FRONT BUMPER. 2ND INCIDENT 3/5/13: DRIVING AT 40 ON CURVED SECTION OF HIGHWAY WITH 2 LANES IN DIRECTION I WAS GOING AND 1 LANE ON OPPOSITE SIDE SEPARATED BY LARGE GRASS MEDIUM WHEN A CAR PULLED OUT FROM THE LEFT HAND U-TURN IN THE MEDIUM. HIT THE BRAKES CAUSING THE TRUCK TO SLIDE STRAIGHT THROUGH CURVE ONTO GRASS SHOULDER. TRUCK CAME TO COMPLETE STOP AND HEARD THE RIGHT REAR SPINNING IN THE DIRT. PUT MY LEFT FOOT ON THE BRAKE TO HOLD TRUCK FROM MOVING. I CHECKED TO MAKE SURE I WAS NOT ON THE GAS. IT SPUN FOR SEVERAL SECONDS BEFORE STOPPING. TRUCK LEFT NORMAL LENGTH OF SKID MARKS. DID NOT SMELL BURNT BRAKES IN REAR; POSSIBLY NOT ENGAGED AT ALL. I AM CURRENTLY LOOKING TO SEE IF I CAN TEST THE BRAKING AT A LOCAL DIRT TRACK TO VERIFY THIS ISSUE, AND TO HAVE OUTSIDE OBSERVATION OF THE OCCURRENCE. I HAVE REPLACED ALL FOUR DISK BRAKES WITH HIGH PERFORMANCE BRAKE ROTORS AND BRAKE PADS TO ASSIST WITH BETTER BRAKING IN THE LAST WEEK. I WILL POST THE RESULTS HERE ONCE I CAN ARRANGE THE TEST. HAVE NOT HAD ANY PROBLEMS WITH NORMAL OR HEAVY BRAKING; ONLY EMERGENCY BRAKING. FIRST INCIDENT RESULTED IN AN ACCI