2009 JEEP WRANGLER wheel size

2. Installing some form of aftermarket window tinting
that affects radio wave signals.
3. Lots of snow or ice around the wheels or wheel
housings.
4. Using tire chains on the vehicle.
5. Using wheels/tires not equipped with TPM sensors.
NOTE:
•If your vehicle is equipped with a matching full-size
spare wheel and tire assembly, it has a tire pressure
monitoring sensor, and can be monitored by the Tire
Pressure Monitoring System (TPMS). In the event that
the matching full-size spare tire is swapped with a low
pressure road tire, the next ignition key cycle will still
show the “Tire Pressure Monitoring Telltale Light” to
be ON, and a chime to sound. Driving the vehicle for
up to 20 minutes above 15 mph (25 km/h) will turnOFF the “Tire Pressure Monitoring Telltale Light” as
long as none of the road tires are below the low
pressure warning threshold.
•If your vehicle is not equipped with a matching
full-size spare wheel and tire assembly, it does not
have a tire pressure monitoring sensor in the spare tire.
The TPMS will not be able to monitor the tire pressure.
If you install the spare tire in place of a road tire that
has a pressure below the low-pressure warning limit,
upon the next ignition key cycle, a chime will sound
and the “Tire Pressure Monitoring Telltale Light” will
turn ON. After driving the vehicle for up to 20 minutes
above 15 mph (25 km/h), the “Tire Pressure Monitor-
ing Telltale Light” will flash on and off for 75 seconds
and then remain on solid. For each subsequent ignition
key cycle, a chime will sound and the “Tire Pressure
Monitoring Telltale Light” will flash on and off for
75 seconds and then remain on solid. Once you repair
or replace the original road tire, and reinstall it on the
5
STARTING AND OPERATING 355

Gross Axle Weight Rating (GAWR)
The GAWR is the maximum permissible load on the front
and rear axles. The load must be distributed in the cargo
area so that the GAWR of each axle is not exceeded.
Each axle’s GAWR is determined by the components in
the system with the lowest load carrying capacity (axle,
springs, tires, or wheels). Heavier axles or suspension
components, sometimes specified by purchasers for in-
creased durability, does not necessarily increase the ve-
hicle’s GVWR.
Tire Size
The tire size on the label represents the actual tire size on
your vehicle. Replacement tires must be equal to the load
capacity of this tire size.
Rim Size
This is the rim size that is appropriate for the tire size
listed.
Inflation Pressure
This is the cold tire inflation pressure for your vehicle for
all loading conditions up to full GAWR.
Curb Weight
The curb weight of a vehicle is defined as the total weight
of the vehicle with all fluids, including vehicle fuel, at full
capacity conditions, and with no occupants or cargo
loaded into the vehicle. The front and rear curb weight
values are determined by weighing your vehicle on a
commercial scale before any occupants or cargo are
added.
Loading
The actual total weight and the weight of the front and
rear of your vehicle at the ground can best be determined
by weighing it when it is loaded and ready for operation.
364 STARTING AND OPERATING

Inflation Pressures..................... 343
Jacking ........................... 389,392
Load Capacity ..................... 338,339
Pressure Monitor System (TPMS) ........... 351
Pressure Warning Light .................. 206
Quality Grading ....................... 479
Radial .............................. 346
Replacement ......................... 348
Rotation ............................ 350
Safety .............................. 333
Sizes ............................... 335
Spare Tire ........................... 390
Spinning ............................ 346
Tread Wear Indicators ................... 347
To Open Hood .......................... 93
Tongue Weight/Trailer Weight .............. 375
Torque Converter Clutch .................. 291
Tow Hooks, Emergency ................... 396
Towing ............................ 365,397Disabled Vehicle
....................... 397
Guide .............................. 369
Recreational .......................... 382
Weight .............................. 369
Trac-Lok Rear Axle ...................... 295
Traction Control ......................... 319
Traction Control Light .................... 211
Trailer Sway Control (TSC) ................. 332
Trailer Towing .......................... 365
Cooling System Tips .................... 382
Hitches .......................... 356,368
Minimum Requirements ................. 376
Trailer and Tongue Weight ............... 375
Wiring .............................. 380
Trailer Towing Guide ..................... 369
Trailer Weight .......................... 369
Transfer Case ........................... 426
Four-Wheel-Drive Operation .............. 291
Maintenance ......................... 426
496 INDEX