Can any help me? I have a 2006 F150 truck with 8 foot bed. I have a virbration on my truck when I'm driving 50-55mph. Is this normal?

 

Get your tires balanced, if the vibration stops when you put on the brakes then it's in the tires. Maybe you lost a wheel weight or if you did any hard curb checks, you could have broken a belt in the tire but you probably would feel that all the time.

 

I had my truck at dealership for a month and half. They mount and balance about 5 months ago. And that didn't work. They put new tires and changed the rear end and transmission, and torte converter and netrulized 3 times and changed the dampner 3 times. They told me that it is normal for my 8 foot bed F150 would have some vibrating at 50-55mph. My truck has 9900 miles on it. When they changed the transmission the vibration lessen. It was real bad before that.
I still feel it when first bought the truck 1 year ago.

 

I know this is an old thread but there is a TSB for the EBrake not releasing all the way causing rear end vibration...just had this problem on my '05. Dealer said they inspected the EBrake by taking off the wheel and all was fine. Two days later after reading on here I found both sides seized up.