Hey, my 2006 short box QC 4x4 pulses when im on the brakes, and at highway speeds you can see the right rear tire wobbling a bit, would a warped rotor cause this? or am i looking at a potentially bent axle? the truck does not "pulse" until i am on the brakes any ideas? thanks!

 

A warped rotor would not make the tire/wheel wobble. A bent wheel would. Swap the rear wheels to see if the wobbling changes sides.
The pulsing when on the brakes does sound like a rotor problem.
Check the easy stuff first: lug nuts tight, all studs good, no debris behind/between the rotor/hub/wheel, etc.

 

Belt on the tire could be seperating just had one replaced because of this.

 

I'm betting the pulsing brakes are not related to the wobbling wheel. Sounds like you have a bent wheel and warped rotors. Two separate problems.

Since the rears are full floating a bent axle will not make the wheel wobble. If the axle housing is bent it will just make the wheel run at an angle.

Try to see if it's the tire that is wobbling or the wheel. Maybe it's just a bad tire with a big bubble ready to blow.