Poor analogy.

Tires are safety-critical equipment with a minimum bar of performance and externally imposed regulations on them that they function at an acceptable level. This makes them a mostly fungible commodity. Search engines are not, and as Google shows, have no minimum bar of performance that a reasonable person can expect.

Also you buy tires once, and then beyond wear and tear they don’t just randomly degrade one day. With search engines you are continuously subject to the daily whims of Google beancounters.