Rotors would be first area to check.....maybe warped
Second item I would check the shocks.....are they leaking down the struts? First sign of bad shocks
Is the ABS light on?
Looking for a Used F-150 in your area?
CarGurus has 220,358 nationwide F-150 listings starting at $1,222.
Search Ford F-150 Questions
Ford F-150 Experts