Sorry for the long winded reply. . .
For some ideas try searching google for "Ford 20 low profile tires vibration" seems a few others 'might be' having a similar issue.
http://forums.focaljet.com/svt-headquarters/448423-steering-wheel-vibration.html
http://www.ford-trucks.com/forums/998827-found-source-of-vibration-2.html
Posts by swetrid, Mike10 has some very good advice.
Most likely its one of the tires with a manufacturing defect, shifted belt, tread separation or something, and/or could also be a defect in one of the rims. You can feel it as a little bump on the tread or sidewall, similar to a blister.
I bought some new 'stock' tires 245/75-17's on stock rims and also had a vibration issue. But not like yours but some tips hopefully: One of the rims threw a weight right in the parking lot. Took it back a few days later and watched him rebalanced it, he had to add an ounce. Sometimes you can watch them balance, the little LED's on the Machine will read '0.00' when balanced. One trick is to ask if they will just check and add weights don't remove all weights and balance; this will see if they can get a consistent balance. Or as soon as you pick it up take a couple of pics or mark where the weights are, monitor and see if you’re losing any.
Another thing i noticed (since yours is a 2010 this shouldn't apply) but there sometimes some corrosion build up on the hub/rim which prevents a good seat, cleaning them up helps. It can also throw off the balance as the rim doesn’t mount consistently on the machine.
With so many tire mounts and dismounts, they might have warped the rotors. I always check after someone else removes my rim. Once i got close to 200ft/lbs on one and the rest 90ft/lbs; the guy used one of the sticks. Happens a lot more than you would think.
Again being so new I don’t think its the wheel bearings, tie rod ends, shocks all front and rear but any of these can cause it too. Might as well as mention drive shafts, half shafts, and anything that spins while moving. Some shops will put it on a hoist and have someone run it in gear (yes up to 70mph but for very short time) and confirm the vibration; after which they remove things until it goes away.
I thought there was a Ford Test for this, called a ‘NVH’ or ‘noise vibration and harshness’ test. They mount some sensors on the frame or such and supposedly it can tell the ‘What and where’ the vibration is coming from.
For crying out loud the speed limit in Detroit where its designed is 70mph, tickets usually are 15mph over. . .so most (not I however) do about 85-90mph around here, on a side not I thought the limiter was set to 105mph, truck was designed to handle that speed (imho).
just some ideas. . .