Vibration noise at 60 mph in rear end

A vibration can be caused by many things like a bad tire, wheel, drive line component etc. It's best to have it inspected by a shop asap. This could be a safety concern so I recommend you have the vehicle towed if it feels unstable. https://repairpal.com/repair-shops Alex

Things that come to mind are drive shaft u joints seizing,rest diff.bearings, drive shaft center bearing. A torque converter can also give chatters or torsional vibrations. We can take a test ride and inspect for you. Thank you,am@everetttransmission.com