One problem related to brake grinding noise has been reported for the 2011 Ford F-150. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2011 Ford F-150 based on all problems reported for the 2011 F-150.
Around June of 2014, I noted grinding noise coming from the front wheels. I took it to a repair facility and had it inspected. The front outer brake pads on both wheels showed fairly normal wear with about 3/8"-1/2" of pad remaining on each pad. The inboard pad on both wheels were worn down to bare metal and almost seized into the inboard side of both rotors. I had the facility replace both front rotors and pads, but the service tech had to clean and lube both calipers as neither was freely sliding. I notified the dealer and was told this was normal wear, but also told the caliper pins have to be lubricated on a regular basis to prevent this from happening again. I've checked the Ford maintenance schedule and nowhere do they recommend having to lubricate the caliper pins on a regular schedule. My concern is this will occur again as I have noted a service bulletin on your website regarding binding calipers, although the selling dealer passes this off as a non-issue for the brakes and part of normal wear. I've talked to Ford customer support, but they didn't seem to concerned about the problem.