Run Flat Tires; Spare Tires - Chrysler 2014 Grand Cherokee SRT Owner's Manual

Snow tires generally have lower speed ratings
than what was originally equipped with your
vehicle and should not be operated at sustained
speeds over 75 mph (120 km/h). For speeds
above 75 mph (120 km/h) refer to original
equipment or an authorized tire dealer for rec-
ommended safe operating speeds, loading and
cold tire inflation pressures.
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

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.
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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

CAUTION!
Because of the reduced ground clearance,
do not take your vehicle through an auto-
matic car wash with a compact, full size or
limited-use temporary spare installed. Dam-
age to the vehicle may result.
Spare Tire Matching Original Equipped Tire
And Wheel – If Equipped
Your vehicle may be equipped with a spare tire
and wheel equivalent in look and function to the
original equipment tire and wheel found on the
front or rear axle of your vehicle. This spare tire
may be used in the tire rotation for your vehicle.
If your vehicle has this option refer to an autho-
rized tire dealer for the recommended tire rota-
tion pattern.
JOB: @zeta.tweddle.com/InfoShareAuthoroChrysler/CLS_InfoShareAuthoroChrysler/GRP_Owners_Manual/JOB_
Compact Spare Tire – If Equipped
The compact spare is for temporary emergency
use only. You can identify if your vehicle is
equipped with a compact spare by looking at
the spare tire description on the Tire and Load-
ing Information Placard located on the driver's
side door opening or on the sidewall of the tire.
Compact spare tire descriptions begin with the
letter "T" or "S" preceding the size designation.
Example: T145/80D18 103M.
T, S = Temporary Spare Tire
Since this tire has limited tread life the original
equipment tire should be repaired (or replaced)
and reinstalled on your vehicle at the first op-
portunity.
Do not install a wheel cover or attempt to mount
a conventional tire on the compact spare wheel,
since the wheel is designed specifically for the
compact spare tire. Do not install more than one
compact spare tire and wheel on the vehicle at
any given time.