2015 Jeep Grand Cherokee Owner Manual - Page 508
2015 Jeep Grand Cherokee Manual
Page 508 highlights
506 STARTING AND OPERATING While studded tires improve performance on ice, skid and traction capability on wet or dry surfaces may be poorer than that of non-studded tires. Some states prohibit studded tires; therefore, local laws should be checked before using these tire types. Run Flat Tires - If Equipped Run Flat tires allow you the capability to drive 50 miles (80 km) at 50 mph (80 km/h) after a rapid loss of inflation pressure. This rapid loss of inflation is referred to as the Run Flat mode. A Run Flat mode occurs when the tire inflation pressure is of/or below 14 psi (96 kPa). Once a Run Flat tire reaches the run flat mode it has limited driving capabilities and needs to be replaced immediately. A Run Flat tire is not repairable. It is not recommended driving a vehicle loaded at full capacity or to tow a trailer while a tire is in the run flat mode. See the tire pressure monitoring section for more information. Spare Tires - If Equipped NOTE: For vehicles equipped with Tire Service Kit instead of a spare tire, please refer to "Tire Service Kit" in "What To Do In Emergencies" for further information. CAUTION! Because of the reduced ground clearance, do not take your vehicle through an automatic car wash with a compact or limited-use temporary spare installed. Damage to the vehicle may result.
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