My tire psi for my EV is set for 36 psi but most dealerships and people keep them at 40 psi. Would this have anything to do with gas mileage and efficiency?
I would think that inflating your tires more would be more efficient but also cause more wear because there’s greater forces on the rubber. But too little inflation would cause them to hit every rock and bang it up more.
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If your tire is softer, it deforms more. If it deforms more, then it suffers more wear and gets warmer. Both of those are efficiency losses. You do get more traction in certain situations though.
A train is this trade-off cranked to the max: they use almost completely non-deforming steel wheels so their rolling efficiency is at maximum. They have relatively bad grip though, so trains can’t go up an incline you would not even notice in a car.
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