2001 Toyota Tacoma shaking at 70+

My 2001 Tacoma shakes when going down the freeway above 70mph. The seats and center console shake bad. Had my tires balanced and rotated but didn't help at all. I swapped the 2 piece rear drive shaft for a single drive shaft but don't think that is causing the issue. Any ideas on what's wrong?

 

Improperly balanced drive shaft would be my guess. Did this start after the one piece drive line install?

 

How old are your tires?

Any change they have a flat spot or unusual wear?

 

Depends where you live it could very well be the roads

Only shakes like this above 70mph?

Cross Wind / head winds ?/

For what speed were your tires balanced ??

We talking 4x4 ? CV axles ?

 

70? I wish my truck could do 70.

 

How's your tire wear? Take it in for an alignment. A good alignment shop will also take a look at your suspension components and let you know if anything looks worn or needs to be replaced.

 

Were the wheels and tires road force balanced?

 

I had a tire out of round, shaked pretty bad at 70. Had new tires put on this morning and it rides like a dream