What Can Cause Uneven Tire Wear 8 3/4 posi ?

One of my jobs over the years was taking care of a fleet of tractor trailers. Tire cost was always a hot topic so extreeme vigilance was needed.

I can tell you for sure if you left the tires alone, the left side always wore faster then the right. Always!

My unscientific study says it was due the the crown built into the roads for water runoff. IMHO