I have a 2002 F-150 extended cab with an 8ft bed. At 16,000 miles (I'm now at 16,500) the front tires began making whump whump noises. The sound appears at approx 50 mph. Anyone have any suggestions. I know y'all are great supporters of the F-150 but I had a check engine light go on at 14,000 and now this tire issue. I am wondering if these sorts of annoying problems are typical for these trucks. I am oldish guy and don't abuse the truck.