Page 422 of 562

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.
Overloading
The load carrying components (axle, springs, tires,
wheels, etc.) of your vehicle will provide satisfactory
service as long as you do not exceed the GVWR and front
and rear GAWR.
The best way to figure out the total weight of your
vehicle is to weigh it when it is fully loaded and ready for
operation. Weigh it on a commercial scale to ensure that
it is not over the GVWR.
Figure out the weight on the front and rear of the vehicle
separately. It is important that you distribute the load
evenly over the front and rear axles.
Overloading can cause potential safety hazards and
shorten useful service life. Heavier axles or suspension
components do not necessarily increase the vehicle’s
GVWR.
420 STARTING AND OPERATING
Page 433 of 562

WARNING! (Continued)
3. GAWR
4. Trailer tongue weight rating for that trailer hitch.
(This requirement may limit the ability to always
achieve the 10% to 15% range of trailer tongue weight
as a percentage of total trailer weight.)
Towing Requirements – Tires
•
Do not attempt to tow a trailer while using a compact
spare tire.
•Proper tire inflation pressures are essential to the safe
and satisfactory operation of your vehicle. Refer to
“Tires – General Information” in “Starting and Oper-
ating” for proper tire inflation procedures.
•Check the trailer tires for proper tire inflation pres-
sures before trailer usage.
•Check for signs of tire wear or visible tire damage
before towing a trailer. Refer to “Tires – General
Information” in “Starting and Operating” for the
proper inspection procedure.
•When replacing tires, refer to “Tires – General Infor-
mation” in “Starting and Operating” for proper tire
replacement procedures. Replacing tires with a higher
load carrying capacity will not increase the vehicle’s
GVWR and GAWR limits.
Towing Requirements – Trailer Brakes
•
Donot interconnect the hydraulic brake system or
vacuum system of your vehicle with that of the trailer.
This could cause inadequate braking and possible
personal injury.
5
STARTING AND OPERATING 431
Page 558 of 562

Tires ...........................104,386,537
Aging (Life of Tires) .................. 393
Air Pressure ........................ 386
Chains ............................ 395
Changing .......................... 439
Compact Spare ...................... 390
Flat Changing ....................... 453
General Information .................. 386
High Speed ......................... 388
Inflation Pressures .................... 387
Jacking ......................... 439,448
Life of Tires ........................ 393
Load Capacity .................... 382,383
Pressure Monitor System (TPMS) ......... 398
Pressure Warning Light ................ 253
Quality Grading ..................... 537
Radial ............................ 389
Replacement ........................ 394
Rotation ........................... 397 Safety
.......................... 377,386
Sizes ............................. 378
Snow Tires ......................... 397
Spare Tire .......................... 441
Spinning ........................... 392
Tread Wear Indicators ................. 393
Tongue Weight/Trailer Weight .............. 428
Towing ............................... 421
Disabled Vehicle ..................... 462
Guide ............................. 427
Recreational ........................ 436
Weight ............................ 427
Traction Control ......................... 371
Traction Control Switch ................... 371
Trailer Towing .......................... 421
Cooling System Tips .................. 435
Hitches ............................ 426
Minimum Requirements ................ 429
Trailer and Tongue Weight .............. 428
556 INDEX
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