Vibration between 45-60 MPH

Recently noticed a vibration thru the floor board between 45-60 MPH. I took it to the dealership thinking it's a ujoint or wheel bearing. They said the truck was mechanically fine and that the vibration was related to my BFG ATs, claiming that they noticed uneven wear. The tires have only 6k miles and I find it hard to believe. The vibration is very noticable and appears to be getting worse. Anyone else have issues with BFG AT?

Any thoughts would be appreciated.

 

I have the same problem with my AT's. They said they wore unevenly. After looking at them, I did notice it. I've always used BFG's, and this is the first time I've had a problem with uneven wear. Of course my tires are 6 years old (only 35k on them).

 

Mine did/do the same. The first time I had a bad tire that wouldnt balance right and so I got it replaced, and now they dont wear evenly and still have a slight vibe. I cant wait to get rid of these!
Dont know whats up with these tires...

 

Check for mud on the inside of your wheels.