I have a SLIGHT wobble in my driver's side rear wheel. I can't feel it when driving, but I can see it if I have the rear on jackstands with the driveline running. I've changed the wheels side-side, and I've also swapped the shafts and bearings when I did the Super 88 kit. The carrier bearings are fairly new, as I installed them about 2 years ago when I put the Detroit in.
I pulled the rotor yesterday and put a dial caliper on the outer edge of the axle flange. I get a deflection of about .009" when the axle turns. This (to me) would indicate a bent axle shaft, but the wobble was also there before I swapped shafts.
1. What else could it be? (housing, bad carrier?)
2. Is it anything I need to be concerned about?

TIA!

Swap your rotors side to side and see if it is still there. I would have said axle too if you hadn't just changed them. The only thing left (it seems) is the rotor...maybe some bad machine work or something?

The axle flange has the .009" deflection w/no rotor installed.:(
I called Superior and they wanted me to measure the runout on the face of the axle flange instead of the edge. I'll do that tonight and see what I find...

Why don't you swap the tires first. I have the same problem. One shop here said my axle was bent and I had a bent housing- had it rebuilt and straightened......it still wobbles after $650 rebuild.:mad3:

Swapped axles too ...that didn't help

Also mine seems to wobble greater when I have my foot on the gas at 45 MPH. You?

Why don't you swap the tires first. I have the same problem. One shop here said my axle was bent and I had a bent housing- had it rebuilt and straightened......it still wobbles after $650 rebuild.:mad3:

Swapped axles too ...that didn't help

Also mine seems to wobble greater when I have my foot on the gas at 45 MPH. You?
The axle deflection happens with NO tires or rotors installed.
Like I siad, I can't FEEL the wobble at all when I'm driving it. I have a harmonic vibration at around 65mph+, so I was trying to find the source of that when I ran the Jeep with the rear off the ground. I can SEE the wobble at that time.

I have about .004" runout on the face of the axle flange, and there's NO play in/out on the shaft.
Ideas?

You can feel the .004" of runout?! I'm stumped.. I can't think of a situation other than that maybe both axles are slightly tweaked.

i had de same problem. One side was really bad. Checked the axle shafts straightness and no problem.
What i did: re-surface both sides of rotors (where the wheel seats and where axle shaft seats) and axleshaft wheel mounting flanges. Also i noticed that the lug nuts (chrome closed) were not seating all the way. I changed the lug nut to the cheap open type to seat properly. I 100% corrected one side. The other has slight wobble.

You can feel the .004" of runout?! I'm stumped.. I can't think of a situation other than that maybe both axles are slightly tweaked.
No, I can't feel it at all. I can SEE it when the rear's up on jackstands.

i had de same problem. One side was really bad. Checked the axle shafts straightness and no problem.
What i did: re-surface both sides of rotors (where the wheel seats and where axle shaft seats) and axleshaft wheel mounting flanges. Also i noticed that the lug nuts (chrome closed) were not seating all the way. I changed the lug nut to the cheap open type to seat properly. I 100% corrected one side. The other has slight wobble.
The wobble's there without the rotors even installed.

Just a thought;

Are you using the stock TJ lug nuts (in otherwords, not open on the end)?
The 8.8 studs bottom out/top out on TJ stock lug nuts before touching the rim.

If you are using stock lug nuts, grind/cut off the studs a bit and see what happens.

The issue seems to be a bent or out-of-balance wheel teamed up with a VERY SLIGHTLY off flange on the axle shaft. I swapped wheels with a known good one from the other side. This one had alot less wheel weights, and seems to track MUCH better with considerably less wobble. My spare also uses alot of wheel weights, so the result was the same when I put that on.
Time for a trip to the tire shop to see how bad the wheels really are...
Thanks all!