2013 Dodge Durango Owner's Manual - Page 516

514 STARTING AND OPERATING CAUTION! After inspecting or adjusting the tire pressure, always reinstall the valve stem cap. This will prevent moisture and dirt from entering the valve stem, which could damage the valve stem. Tire pressures change by approximately 1 psi (7 kPa) per 12°F (7°C) of air temperature change. Keep this in mind when checking tire pressure inside a garage, especially in the winter. Example: If garage temperature = 68°F (20°C) and the outside temperature = 32°F (0°C) then the cold tire inflation Inflation pressures specified on the placard are always pressure should be increased by 3 psi (21 kPa), which "cold tire inflation pressure." Cold tire inflation pressure equals 1 psi (7 kPa) for every 12°F (7°C) for this outside is defined as the tire pressure after the vehicle has not temperature condition. been driven for at least three hours, or driven less than Tire pressure may increase from 2 to 6 psi (13 to 40 kPa) 1 mile (1.6 km) after a three hour period. The cold tire during operation. DO NOT reduce this normal pressure inflation pressure must not exceed the maximum infla- build up or your tire pressure will be too low. tion pressure molded into the tire sidewall. Check tire pressures more often if subject to a wide range of outdoor temperatures, as tire pressures vary with temperature changes.