whenever i go over a real big bump in the road the driverside tire starts vibrating and bouncing really bad until i slow down and then it goes away, this happens around 40 mph. ive replaced the wheel bearing and i haved the tire re balanced. Not sure what elste to check. ive got a 6.5 inch lift with 33's

 

There is a few items that can cause this but with only one side doing this,I would look at ball joints to start.

 

1/2 death wobble lol, sorry not funny

 

inspect shocks

 

that was one of the first things i checked