2004 Jeep Grand Cherokee Owner's Manual - Page 220

220 STARTING AND OPERATING TIRE CHAINS Certain models have sufficient tire-to-body clearance to allow use of tire chains. Install chains on rear tires only. Follow these recommendations to guard against damage and excessive tire and chain wear: • Do not install tire chains or traction devices on vehicles with larger than P225/75R16 size tires. These tires are too large for sufficient body clearance with chains or other traction devices. • Use SAE class "S" tire chains or traction devices only. • Follow tire chain manufacturer's instructions for mounting chains. • Install chains snugly and tighten after 1/2 mile (1 km) of driving. • Do not exceed 35 mph (56 km/h), unless otherwise specified by the chain manufacturer. • Drive cautiously, avoiding large bumps, potholes and extreme driving maneuvers. 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. The benefits of rotation are especially worthwhile with aggressive tread designs such as those on On/Off Road type tires. Rotation will increase tread life, help to maintain mud, snow, and wet traction levels, and contribute to a smooth, quiet ride. Follow the recommended tire rotation frequency for your type of driving found in the "Maintenance Schedules" Section of this manual. More frequent rotation is permissible if desired. The reasons for any rapid or unusual wear should be corrected prior to rotation being performed.