2015 Jeep Grand Cherokee Owner Manual - Page 504
2015 Jeep Grand Cherokee Manual
Page 504 highlights
502 STARTING AND OPERATING Tire Inflation Pressures The proper cold tire inflation pressure is listed on the driver's side B-Pillar or rear edge of the driver's side door. At least once a month: • Check and adjust tire pressure with a good quality pocket-type pressure gauge. Do not make a visual judgement when determining proper inflation. Tires may look properly inflated even when they are under- Check tire pressures more often if subject to a wide range inflated. of outdoor temperatures, as tire pressures vary with • Inspect tires for signs of tire wear or visible damage. temperature changes. Inflation pressures specified on the placard are always "cold tire inflation pressure." Cold tire inflation pressure is defined as the tire pressure after the vehicle has not been driven for at least three hours, or driven less than 1 mile (1.6 km) after sitting for a minimum of three hours. The cold tire inflation pressure must not exceed the maximum inflation pressure molded into the tire sidewall. 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
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