Lynnmor wrote:
“...That shackle failure was in the making for a long time, it was not a sudden break from the current road conditions. ...”
I will respectfully disagree. I never had a problem with shackles before. The tire failure and resulting drag, over a couple of miles of unimproved road was certainly the cause. The failed tire was left rear and the shackles were on the front of the associated spring, attached to the pivot connecting to the front axle. The rear axle spring, luckily, wound up solidly wedged on the trailer frame leaving adequate clearance for the left side tires. With spare tire in place, we slowly nursed the rig another 2 miles to a camp site, juggled various jacks and replaced the shackles.
Also the opinion of the local tire shop and NAPA, where I bought the replacement shackles for the “Good Sam” guy and spares for my tool kit.
PS take another look at my tire photo. It wasn’t rolling “free” .