vibration in rear wheels after startup
 

this only happens after a cold start and i turn the steering wheel and start to drive forward...i can feel vibrations in the rear wheels for about 2 seconds but then goes away and doesnt come back until another cold start. Does anyone know what this could be?

Probably just the LSD engaging while it's cold. It can be a little harsh before the gear oil warms up.

I noticed this the other day and I agree that I figured it was just the LSD kicking in while cold. I also noticed this after I put a good bit of tire shine on.