2010 Jeep Grand Cherokee Owner's Manual - Page 304

STARTING AND OPERATING 303 • Do not install tire chains or traction devices on vehicles with larger than P235/65R17 tires. Tires larger than this may not provide sufficient body clearance with chains or other traction devices. • Use SAE class "S" tire chains or traction devices only. TIRE ROTATION RECOMMENDATIONS Tires on the front and rear axles of vehicles operate at different loads and perform different steering, handling, and braking functions. For these reasons, they wear at unequal rates and develop irregular wear patterns. These effects can be reduced by timely rotation of tires. • Follow tire chain manufacturer's instructions for The benefits of rotation are especially worthwhile with mounting chains. aggressive tread designs such as those on On/Off-Road • Install chains snugly and tighten after 0.5 mile (1 km) type tires. Rotation will increase tread life, help to mainof driving. tain mud, snow, and wet traction levels, and contribute to a smooth, quiet ride. • Do not exceed 30 mph (48 km/h), unless otherwise specified by the chain manufacturer. Refer to "Maintenance Schedule" for the proper maintenance intervals. More frequent rotation is permissible if • Drive cautiously, avoiding large bumps, potholes and desired. The reasons for any rapid or unusual wear extreme driving maneuvers. should be corrected prior to rotation being performed. NOTE: The premium Tire Pressure Monitor System will automatically locate the pressure values displayed in the correct vehicle position following a tire rotation. 5