A Typical indoor Big Box Store display
I don't mean to pick on any particular store because this picture identifies an issue with almost every tire store I have ever been in: Inattention to detail when it comes to freestanding tire stack displays. I've changed the color to Black and White to help obscure the identity of the company involved.
Except for the sloppy installation of the merchandising disc, the one on the left is not too bad actually. The stack is straight and the labels are all lined up - but it happens to share space with the stack on the right. Notice how the labels are reversed from each other and rotated around the stack, which is not exactly true itself. Now, maybe these were just placed here temporarily, although temporary may include a couple of days since I saw them there yesterday also...
You get the idea. If these stacks were built on a TruStack Tire Dolly, and that work was done by a careful employee, maybe the one who built the stack on the left, they would be straight and true and mobile.