Not to hijack your thread but I have a very similar issue, I have no "shaking" of the wheel or anything, but I feel a very strong vibration through my pedal/floorboard starting at about 45 mph and gets worse as speed increases. Putting windows up at high speed results in a really loud hum, as if I had boggers or something. This has developed recently, seemingly out of no where. Replaced wheel hubs, tires have been balanced/rotated/checked for damage, but the issue persists. Running on 33 x 10 BFG AT's, 15 " rim. 4wd, 3 inch body. Tires have been on the truck over a year, this issue just developed in the last week or so. Thanks for any help!

Installed recently:
MOOG upper control arm/bushings
MOOG lower ball joints
OEM front hubs both sides
OEM leaf springs/u-joints
Pro-Comp shocks

All of these were installed well before this issue began, aside from the passenger hub which I thought may have been the culperate (wasn't).

Again I do not feel any vibration at all in my steering wheel or the handling of the truck, just a strong vibration (and hum with windows up) at highway speed

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