Check those suspension shackles

[Wheelhouse]

I was under my rid (2007 - 3500RL) recently and noticed a crack at one of the suspensions??? I called Mor-Ryed and discussed what I saw and they said they needed to be replaced. I never realized this could happen. That must have been what was making my passenger front tire track wrong wearing one side of the tire. Here is what I found when they were replaced. The tears were also on the top of the both shackles.