This is an original by Tom Gunter.

I left my car at the shop overnight when I bought a new set of radials. When we picked it up the next day, I saw the word “sleeper” scrawled across the paperwork.

I said to my wife, “Look, my car slept here last night.”

“Of course it did,” she replied. “It was tired.”

From Chris Cole:

The next time he takes in his car for new treads he should get the senior citizen discount… because then his car will be retired! (Except i n New England where only bald tires are allowed on the intersate highways — “Don’t tread on me!”)

Of course, old wagon wheels literally had steel belts, whereas these new-fangled wheels suffer from iron deficiency, hence they are more easily tired.