AU09

I have an 04 F-150 4x4 Supercrew and have the exact same problem. It has 107k miles and just put brand new tires on last week. I notice it every now and then when im going at highway speed(50 to 75mph) let off gas, slow down 10mph or so then hit the gas again and the truck shudders/vibrates. I also notice it coming out of turns sometimes, not all the time but sometimes. I have heard from several ppl that this is a common problem. It can be annoying at times but the all the positives of the truck def. outway the shudder.

bonser216

Take a very good look at your brake calipers. when you feel the vibration take a chance and maybe pull over to see if any brakes are hotter then the others. i had this issue on my 2004 F150 supercrew and my dad had this issue on his F250. every so often it would vibrate pretty hard and then go away at around 50-60mph. didn't feel it too awful much over that but it was still there. make sure the pistons in the calipers are not cracked.

and if it is a caliper.. make sure you get the good ones from ford. i got the ones from the cheap car quest place down the road.. its been 2 months and they have all kinds of surface rust on them makes my truck look horrible.