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tire quality has improved over the decades and there are a lot fewer flat tires experienced. This and the complexity of cars has reduced the number of people who can actually do much at all if even basic maintenance.
I know 2 guys who have the dealer change their oil on their 911s. I cannot imagine an easier maintenance item except perhaps changing out air and cabin filters.......
I don't expect my pixie wife (who wouldn't know what end of a screwdriver is the business end) to change a tire. So I buy her cars with run flat tires. previously the instructions were, "drive carefully on the flat tire to a gas station, do not worry about the noise."
People, guys even, are not any where near self sufficient as we had to be 30 years ago.
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