I have a 2000 Cherokee Sport with a C8.25 that has about 216,000 miles on it. Recently it started feeling like I'm getting drive line vibration in the floor bored. At first it was only when i turned, now it's just about every time i take off. I've recently heard rear wheel bearing while searching, the only thing that throws me off is it smooths out after about 30-35mph, not get worse... Help please!
Things I've replaced recently:
Driver and passenger ball joints
Driver and passenger axle joints
Wheels and tires
Front diff fluid
Things I've Checked:
Front and rear U-joints
Front wheel bearings (though they appeared to be the original ones they seemed fine)
Note: This had started happening before I checked/replaced these parts. Thank you.

Jack up the rear tire and try to pull it in and out.
If it's got play the bearing is bad.

Both sides move in and out just a hair. Wouldn't they do that though, because isn't they 8.25 a C-clip axle?

I changed my rear wheel bearing over a year ago cause I grabbed the tire and it moved in and out about 1/16 or so ( I thought it was bad ) and after replacing it it still done it. I assumed that a c clip axle is supposed to do that.Any ways try grabbing it at 3:00 and 9:00 and wiggle.

ya beat me to it lol try 3:00 and 9:00 and wiggle

I have a feeling if it is a rear wheel bearing it is the driver rear because it smelled kind of hot last night. Both side kind of move, though it doesn't make a clunking noise, so i cant tell if its my tires or axle doing the moving..

Have you checked rear drive shaft u joints?

c-clip axles do have some movement. replacing the bearings won't fix that.

where the vibration? under your feet, from your seat, back of the vehicle?

Yes there is 0 play..

Did you touch (carefully!) the axle flange to see if it is hot ???

I feel it in my feet upon take off through about 30- 35 depending how hard I get on the gas. 30mph on a regular take off from a stop light.

No because I didn't realize I should until I read about it last night after my jeep had cooled down. I have yet to drive it to day.

I'm going to pick "Motor or Transmission Mount" for $100

I have a T-case drop because I had drive line vibes from my lift. (It fixed the issue) Would that make you be able to tell you which mount would be bad?

t-case drops put strains on both trans and motor mounts