I've got a 2004 f150 and lately at around 85 km it has been kind of bouncing it feels like, or like the tires are out of balance. I recently had the ball joints done and an alignment and the hub assembly. What else could be causing this? And only at certain speeds.

Thanks

 

tire balance, dried mud or snow in the wheel, did they rotate your tires?

 

I don't know actually..i might go get them balanced and rotated and see what happens

 

Dried Snow ???

 

Yeah, it's frozen dehydrated water.