Weird vibration

A responder suggested the suspension forum would be a better place to post this. Just learning how to use the site.

Been experiencing a vibration at 60 to 70 mph in my 06 4x4. It has 225k miles on it. Did some of the obvious. Replaced the Ranchos with Monroes, bushings were splitting. HadAmericas Tire rotate and balanced Michelins. Vibration still there. 2nd balance and still there. Took a trip to Carson City. Discount Tire Road Force balanced again. Better but still there. Took it to my local dealer. $200 and two days later, "this is a tough one." Report said, excessive play in driveline, replace driveshaft, given the age and miles, replace front axles, ball joints andcontrol arms, rack seeping, replace rack. 8k to do the work. Don't think so. Replaced the center support, vibration still there. America's Tire replaced two rear tires, still there. I rotated the two new tires to the front, still there but not as bad. Tomorrow America's Tire is replacing remaining two tires. Good thing they are prorating them. At my wits end. Starting to hate driving it. Help.

 

Given the age of the truck, it could be differential bearings, wheel bearings, or front bearings. If they have play, they can allow movement, that could cause something like that. There's ways for them to check that stuff before just replacing it all.