Tesla Tire Pressure: Right PSI and the Cold-Morning Alert

The right pressure for your Tesla is the number on the door-pillar label, and the car repeats it on the screen. The manual says tires lose about one psi for every 10°F drop, and the low-pressure alert fires when a tire is 20 percent under that label. Run the math and a correctly filled tire cannot reach the alert until about minus 8°F, which means the warning on a 30°F morning is a tire that was already low in summer.