About time I got a tire changer

[Grumpy Goat]

I had mine bolted on a piece of ¾" plywood so could move around the garage when not using. I put the plywood on a 36" X 60" door mat felt side down so it slide around easily.

I guess that is stable enough especially if you stood on it while using the changer ...? I am thinking of doing something similar ... maybe mounting the 3/4" plywood on top of a 4x4 base if needed, but from your post it sounds like that might not be needed.