Topic: diff. noise or tires?

[huntingbuck101]

I have a howl and not sure if it tires or the diff. I did put 4.88 in it so it could be just a bad mesh job but I also have Yokohama MT's which I'm told are loud. I really don't remember if it was that loud before the gear swap or not.
If I drive around 30 mph and let of the gas it seem to get better but at around 60 it's the same on the gas or off. its kinda a resonating sound, not a big deal but I'm thinking of getting some Destination AT's and would rather tell my self the noise is just tires even if it's the diff. because knowing I have quiet tires and still having a howl would bug me worse!

would letting of the gas or pushing in the clutch a highway speeds reduce a howl in the diff?

[aw12345]

if its to much backlash or play on the carrier bearing it will howl under load and it will go away if you let of the gas.
If its a damaged pinion bearing it will howl worse when you let of the gas

[bestos]

did my 4.88 and my car hummed LOUD.  We had the crush sleeve too tight.  was tighter than 8 IN LBS.  Too much pressure on the pinion bearing.  redo the setup