Tire Pressures For High Speed Operation; Radial-Ply Tires; Spare Tire Matching Original Equipped Tire And Wheel - If Equipped - Jeep Cherokee Operating Information Manual

inflation pressure is defined as the tire pressure
after the vehicle has not been driven for at least
three hours, or driven less than 1 mile (1.6 km)
after a three-hour period. The cold tire inflation
pressure must not exceed the maximum infla-
tion pressure molded into the tire sidewall.
Check tire pressures more often if subject to a
wide range of outdoor temperatures, as tire
pressures vary with temperature changes.
Tire pressures change by approximately 1 psi
(7 kPa) per 12°F (7°C) of air temperature
change. Keep this in mind when checking tire
pressure inside a garage, especially in the
winter.
Example: If garage temperature = 68°F (20°C)
and the outside temperature = 32°F (0°C) then
the cold tire inflation pressure should be in-
creased by 3 psi (21 kPa), which equals 1 psi
(7 kPa) for every 12°F (7°C) for this outside
temperature condition.
Tire pressure may increase from 2 to 6 psi (13
to 40 kPa) during operation. DO NOT reduce
this normal pressure build-up, or your tire pres-
sure will be too low.
188
Tire Pressures For High Speed
Operation
The manufacturer advocates driving at safe
speeds within posted speed limits. Where
speed limits or conditions are such that the
vehicle can be driven at high speeds, maintain-
ing correct tire inflation pressure is very impor-
tant. Increased tire pressure and reduced ve-
hicle loading may be required for high-speed
vehicle operation. Refer to original equipment
or an authorized tire dealer for recommended
safe operating speeds, loading and cold tire
inflation pressures.
WARNING!
High speed driving with your vehicle at or
above maximum load is dangerous. The
added strain on your tires could cause them to
fail. You could have a serious collision. Do not
drive a vehicle loaded to the maximum capac-
ity at continuous speeds above 75 mph
(120 km/h).

Radial-Ply Tires

WARNING!
Combining radial ply tires with other types of
tires on your vehicle will cause your vehicle to
handle poorly. The instability could cause a
collision. Always use radial tires in sets of four.
Never combine them with other types of tires.
Cuts and punctures in radial tires are repairable
only in the tread area because of sidewall
flexing. Consult your authorized dealer for ra-
dial tire repairs.
Spare Tire Matching Original
Equipped Tire and Wheel – If
Equipped
The spare tire of your vehicle is equivalent in
look and function as 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 an
option for a spare tire matching original equip-
ment tire and wheel, refer to the recommended