One problem related to front suspension control arm has been reported for the 2011 Ford F-250. The most recently reported issues are listed below.
My truck starts shaking violently at 40-60 mph. Steering control is lost and can only be regained by coming to a complete stop. Truck will not switch lanes and pulling over to the shoulder is impossible due to loss of steering. Shaking is violent to the point of loosening bolts. Taken to dealer to be checked under warranty. They claimed it was air pressure or the need for new tires. The vehicles tires are in good condition and air pressure is set at factory recommended levels. Ford says this behavior is normal. A serious accident extremely possible. An independent suspension shop claims issue is due to defective ball joints, lack of steering damper, and defective control arms.