[FredZarguna]

Even more significantly, go use those tires, and discover that even with good, regular rotation they only get you 50K miles instead of the 70K they used to get.

[EVO X]

Even more significantly, go use those tires, and discover that even with good, regular rotation they only get you 50K miles instead of the 70K they used to get.

I don't think you can use general tire wear and tear that as an indication of inflation. You have to use the same car and same tire for replacement costs. None of the cars I've had in the last 30 years got anywhere near 70K miles. I've been close to 50K a couple of times by keeping the tires overinflated most of the time. Wearing the tire down to the legal minimum of 2/32 tread is actually pretty stupid unless you live in an arid climate.