That means you won't just know when your tires are overinflated or underinflated. You can predefine the alarm values too, allowing you to set the pressure range from 12 PSI to 87 PSI.

For every change of 10 degrees in the outside temperature, tire pressure changes about 1 psi. So if you fill your tires to 33 psi when it's 75 degrees out, and it drops to 25 degrees at night ...

The agency estimates that tire pressure typically drops by approximately 1 to 2 pounds per square inch for every 10 degrees Fahrenheit. AAA also reminds that motorists check all four tires at the ...

On average, tire pressure can adjust by one psi (pound per square inch) for every 10-degree F fluctuation in air temperature, and the deflation rate increases in icy or snowy weather.

A direct TPMS works a little more like you'd expect, with its sensors located right inside of the tires themselves. This sensor checks the ambient pressure inside of the tire, as well as relevant ...

According to the website, fueleconomy.gov, inflating tires to their proper pressure can improve mileage by about 3.3 percent, whereas leaving them under-inflated can lower mileage by 0.4 percent ...