DURING TRAFFIC IN HOT WEATHER ON HIGHWAY THERE IS SQUEALING SOUND COMING FROM FRONT DRIVERS SIDE OF VEHICLE AND SMOKE COMING FROM REAR DRIVER TIRE AFTER EXITING HIGHWAY TO CHECK THE NOISE. AFTER EXITING HIGHWAY I FELT ALL 4 METAL WHEELS AND DRIVER'S SIDE REAR WAS EXTREMELY HOT AND OTHER WHEELS WERE WARM TO THE TOUCH. I HAD THE EXACT SAME CONDITIONS ON PASSENGER REAR BRAKES LAST SUMMER AT ~50,000 MILES, AND THE DEALERSHIP REPLACED REAR PASSENGER CALIPER IMMEDIATELY. THIS TIME THEY CLAIM ARE NOT ABLE TO REPRODUCE THE SEIZING OF CALIPER AFTER 3 MILE TEST DRIVE AND CALIPERS APPEARED TO BE IN WORKING CONDITION. I ARGUED THAT THE PROBLEM MAY OCCUR DURING LONG DISTANCE HIGHWAY TRAVEL AND MAY NOT HAPPEN ON SHORT TEST DRIVE. DEALERSHIP ARGUED THAT IT IS FORD POLICY NOT TO PERFORM WARRANTY REPAIRS/REPLACEMENT WORK WHEN THEY ARE UNABLE TO REPRODUCE PROBLEMS DESCRIBED BY CUSTOMER. I AM VERY UPSET THAT I HAVE TO WORRY ABOUT MY CAR STARTING ON FIRE EVERY TIME I DRIVE ON HIGHWAY. 2011 FORD EXPLORER XLT 3.5L V6 TIVCT. NORTHWEST CHICAGO IL. *TR