Shimmy in rear end

Wondering what I could be causing me to pick up a shimmy when I get up to 61 and somewhat goes away at about 70 but not always. I can get it to go away sometimes if I shift down to 4th and slow down to 55 and re accelerate up to 65ish and shift back to 5th. I'm thinking possible wheel bearing Maybe break drums or even my diff itself. My abs is on. Has recently been aligned and new tires put on 3k miles ago

 

Rebalancing tires would be the first place I would look since it's easy and cheap. Being new tires maybe one of the weights came off

 

I'm getting tires balanced right now (crossing my fingers)

 

I've had it before like you describe where it's only at certain speeds because of a tire weight. It's weird but it happens

 

Just hoping it's not my differential or a wheel bearing that's when stuff gets costly

 

Balance or even a broken belt in a tire can create that.

As @E30325 says, start simple.

Jumping is good exercise. Jumping to conclusions just creates anxiety.

 

Turns out all four wheels were out of balance possibly due to temperature and wheel weights maybe being thrown I also have two bad u joints one in my 4wd propeller and one in my furthest back drive shaft nearest my rear diff so I'll be beatin on some sockets for awhile hahah

 

Not the worst news, sucks it's more then just balance, but better then it could have been