Jeep 2009 Grand Cherokee - Owner Manual - Manual (Page 345)

WARNING! (Continued)
• Failure to equip your vehicle with tires having
adequate speed capability can result in sudden tire
failure and loss of vehicle control.
CAUTION!
Replacing original tires with tires of a different size
may result in false speedometer and odometer read-
ings.
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 ve-
hicles 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.
• Follow tire chain manufacturer’s instructions for
mounting chains.
• Install chains snugly and tighten after 0.5 mile (1 km)
of driving.
• Do not exceed 30 mph (48 km/h), unless otherwise
specified by the chain manufacturer.
• Drive cautiously, avoiding large bumps, potholes and
extreme driving maneuvers.
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