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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Your design tire pressure is determined both by the tire, and by the weight of the vehicle. Assuming proper steering alignment, an overinflated tire will tend to wear down the centerline, while an underinflated tire will wear towards the edges. Proper inflation ensures maximum contact area between the tire and the road, and the greatest possible longevity of the tire. Recommended tire pressure for your vehicle will be indicated on a sticker located in the door jamb on the driver’s side. This pressure is the cold pressure – i.e. the pressure in the tire before you start driving on it and the tire heats up.
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