Driving with correctly inflated tires is important for several reasons: Increases safety Reduces tread wear Improves handling and ride performance Maintains better fuel economy Although most drivers know this, many still do not take preventative action by regularly checking their tire pressure According to a survey by the national highway transportation safety administration (NHTSA), 27 percent of the passenger cars and 33 percent of the light trucks (including SUVs, vans and pickups) on America's roads have at least one substantially under-inflated tire Under-inflation of tires increases the likelihood of many different types of crashes including those involving: Skidding and/or loss of control of the vehicle Hydroplaning Increase in stopping distance Flat tires and blow-outs, and overloading of the vehicle For the small amount of time it takes, checking tire inflation at least once a month is one of the best investments you can make to get the maximum life out of your tires Proper inflation can also improve gas mileage by more than 3% when maintained regularly Keep this in mind: under-inflated tires can lower gas mileage by 0.4 percent for every 1psi(pounds per square inch) drop in pressure of all four tires You may want to check your tires more often during the winter months Tires will lose about 1psi of pressure for every 10 degrees Fahrenheit of temperature drop Keep an tire pressure gauge in car's glove box and check the tire pressure when the tires are cold Use this product to get quickly and more safety Features: Pressure range: 5 to 150psi LCD digital display Rugged ABS construction High-accuracy: +/- 1psi Resolution rate: 0.05kg/sqcm, 5kPa, 0.5psi, 0.05Bar Four unit display: psi, kPa Bar, kg/sqcm Automatic shutdown for power-saving mode More designs are available OEM products are welcome