I know there was a service bulletin for the rear axle, and a growling noise that good be heard, it seems i am getting that noise, i just starting hearing it, a couple weeks ago i got my driver reartire changed and that tire has high tread on it and the passenger rear has low tread, could it be from that, could that wear out the bearing's sooner, or is it my time to get that fixed now lol, and i still have that shaking that seems like it's coming from the rear drum's which they never fixed when i had my brakes serviced, could that have caused my bearing's to wear sooner, dunno just a bunch of guessing what ya'll think lol, and i have that 8.25 Rear Axle, does that make a difference.