Please use tire gauge to test the wheel pressure every week regularly when the tire is cold especially before long distance travel. Hyper Tough Standard Pressure Tire Gauge (Model ST111704S) is designed for daily use required at the service level. It is equipped with 2 inch dial for clear reading 5-60psi reading for extremely high accuracy. perfect for truck bus car SUV RV ATV bike (with Schrader valve) or motorcycle. Twist off the valve cap pressure release valve makes getting the correct tire pressure quick and simple. After using please twist on the valve cap and push the scale plate back. No battery needed. For sedan 28-35PSI is perfect.