Weird Vibration In tow Rig/Daily Driver

[67 prostreet gt]

Help, Weird Vibration in my daily driver/ tow rig seems fine up til 60 mph then the truck seems to start vibrating. sometimes the vibration is bad other times it isn't and the vibration only starts if I level off on the speed and keep the speed constant anywhere from 60-70 mph. Listed below are the recent parts changed

-rear driveshaft u joint

-both wheel hubs up front

-Driver side door

-driver side stub axle

I really want to get this fixed but I also don't want to just throw money at it and hope I get it

 

[norshorblufish]

Don't forget bad tire & wheel balance. Sometimes you don't notice it until you get to a certain speed.

 

[67 prostreet gt]

Ive had those wheels and tires on there for years can the tires just be getting old and worn out? they are mud terrain tires 33 inches tall

 

[norshorblufish]

Very possible or you could have lost a wheel balancing weight.
I'd also check for plys starting to separate or any weird wear on them.

 

[67 prostreet gt]

Plys????

 

[jhdeval]

Very possible or you could have lost a wheel balancing weight.
I'd also check for plys starting to separate or any weird wear on them.

Also tires don't wear evenly so it is possible that if you have not been rotating religiously they are just out of balance.

 

[briankaplan]

If they are radials. The cords can shift at anytime. Look for a lump in the tire. Sidewall or even the thread area.

 

[67 prostreet gt]

OK ill check the tires they haven't been rotated ever as far as I know unless someon stole the keys for a day to do it and I just don't remember

thank you for the tips and ideas