There are bad movies, and then there are BAD movies. Rubber, if you couldn’t guess by the title alone, falls in the latter category. It purports to be a satirical take on horror/slasher films. I suppose it is, but it isn’t a good satire, it’s a terrible one. Pretty much every decision they made was a bad one.
The film is about a sentient tire that rolls through the desert, and kills people by exploding their heads with psychic energy. That idea is amusing enough for a one-shot comic or an SNL sketch, not a feature-length film. That’s the problem right there. A punchline can’t be stretched to accommodate an entire movie.
The bulk of the movie is about a cop who investigates the murders, and slowly comes to realize that the tire is the one doing the killing. He and his colleagues attempt to take down the murderous tire. Now, if that had been it, the movie might have been watchable. But it didn’t stop there, it took things further down the rabbit hole of shittiness.