Of course I use this to check the air pressure in my car tires. I have ordered several of these sensors, one for each of my cars and trucks. I compared the pressure readings of each of these gauges to each other and to other professional gauges and found that the readings were consistent and accurate. I've compared smaller products and found them to be cheap, inaccurate and inconsistent. Very easy to use, accurate and easy to read. If you are interested in a quality pressure gauge, invest in this product.