... with magnet·Plastic head, aluminum tube·4 side plastic bar·Pressure range: 10-50 psi and 70-350 kpaTip: Scales selection ... tire will be displayed.Notes:For accuracy, check pressure when tires are cold. Pressure increases with heat. Tires can lose one pound ... per month under normal conditions. Proper tire pressure improves gas mileage, handling, braking and durability.Caution:To avoid ...