Dogtracking

All F-150, F-250, F-350 4x2, 4x4 and Bronco vehicles with single rear wheels (SRW) have, by design, a front tread that is wider than the rear tread. Front tread is the distance between the two front tires; rear tread is the distance between the rear tires. The illustration shows these differences.

When a vehicle with these tread differences is driven on a crowned road, the front may tend to ride higher up the crown than the rear, making the vehicle appear to dogtrack, as illustrated.