Billboardtrailer

I'm sure the word doesn't exist (yet), but that's what this wheel is a part of.
A farmer placed one of his trailer outside our village ages ago and put a billboard on top of it. In all those years he let it decay, what is best visible in the platform of the trailer and the wheels.
In Summer the sun burns on them, in Winter the cold deteriorates them further. The result can be seen, a ruined rubber tyre.