trailer VS car tire????

I'm guessing your car would handle and ride like a trailer. Sounds like a bad idea to me. Extra stiff sidewalls, not rated for more than 65mph, and not designed to transfer power to the ground. Or be steered.

Not to mention, it's illegal and you could be cited. If you were involved in an accident it's quite likely that fault could be assigned to you regardless of the details of the accident, and your insurance company would have more than enough reason not to pay your claim.