After my car dealer changed the original tires on the new car to snow tires, I wondered what the tire pressure I should maintain. I called Bridgestone 1 (800) 441-1669 because the new snow tires are Bridgestone Blizzak WS80. The maximum PSI (pounds per square inch) listed on the sidewall is 44 PSI. Bridgestone customer service asked my car make, model and year. I was given the front tire pressure and rear tire pressure according to the car manufacturer recommended tire pressure for this model. Nothing to do with what tires you put on.
It is confirmed by this article: https://www.kaltire.com/the-right-tire-pressure-why-the-maximum-isnt-the-best/
You’ll find the manufacturer’s optimum or recommended tire pressure for
your car on a sticker in the door jam, or in your owner’s manual.
