Tire Spinning; Tread Wear Indicators - Jeep 2014 Grand Cherokee Owner's Manual

400 STARTING AND OPERATING

Tire Spinning

When stuck in mud, sand, snow, or ice conditions, do not
spin your vehicle's wheels above 30 mph (48 km/h) or
for longer than 30 seconds continuously without stop-
ping when you are stuck.
Refer to "Freeing A Stuck Vehicle" in "What To Do In
Emergencies" for further information.
WARNING!
Fast spinning tires can be dangerous. Forces gener-
ated by excessive wheel speeds may cause tire dam-
age or failure. A tire could explode and injure some-
one. Do not spin your vehicle's wheels faster than
30 mph (48 km/h) for more than 30 seconds continu-
ously when you are stuck, and do not let anyone near
a spinning wheel, no matter what the speed.

Tread Wear Indicators

Tread wear indicators are in the original equipment tires
to help you in determining when your tires should be
replaced.
1 — Worn Tire
2 — New Tire