Rough ride at ~60 mph

[k_pin]

My 2000 ranger 3.0 xcab rides great. Up till i get around 60 mph. Then it just rides rough. It starts getting better around 65-70 and is smooth as can be after that.

Does anyone know the cause? I seem to remember this issue with a maxima i used to have and i think it may have been wheel bearings?

 

[Velpen]

Rough Ride

Could be an out of balance tire. Low pressure in a tire can also throw off the ride.