Hello I'm new to this but I have a problem on my 94 300zx in my zx it vibrates on the rear n middle of the car too I have rebalance the driveshaft but no luck still feel vibration can yall please help me on what else it could be thanks!!

 

Check motor mounts? Tranny mount? Maybe the motor has a misfire?

 

I had vibrations in the back, was the diff and subframe bushings.

 

Could also be a separated tire or a bad bearing in a c.v. axle

 

More than likely the carrier bearing. Just had to replace mine. Fixed the problem. I do suggest replacing the U joints when you do it thought.