And changing tech. My car doesn’t even have a spare. It’s got a cigarette lighter compressor and a bottle of basically “fix-a-flat”. The expectation is to use that to get the tire short term usable.
And in 10 years I’ve never had a flat. Think I’ve only had 1 or 2 my whole life. Honestly I should check the bottle, see if it has an expiration.
Fix a flat only works if the puncture is in the tread. The construction of radial tires have bands moving in a circular direction around the tire, with a band of steel weaving around the tread. It works real well almost all of the time. However, if you get a puncture at the edge or outside of the edge, you cannot fix a radial tire. The hole will continue to rip.
The old poly tires have a basket type weave throughout the tire, so the puncture can only move to the nearest weave band. That is why all ATV tires are still poly.
Having said that, I had significant construction near my house and I got a flat about every 4 months (Nails, screws, etc.).
I now ensure I have a spare for all of my vehicles. I went so far as to buy a doughnut spare for my son-in-law's car. He laughed, but put in his car. About a year later, he needed it.