2007 RAM CHASSIS CAB tire size

Improper alignment will not cause vehicle vibration.
Vibration may be a result of tire and wheel out-of-
balance. Proper balancing will reduce vibration and
avoid tire cupping and spotty wear.
SUPPLEMENTAL TIRE PRESSURE INFORMATION
– IF EQUIPPED
A light load vehicle condition is defined as two passen-
gers {150 lbs (68 kg) each} plus 200 lbs (91kg) of cargo.
Cold tire inflation pressures for a lightly loaded vehicle
will be found on the face of the driver’s door.
TIRE CHAINS
Use “Class U” chains on Ram Trucks, or other traction
aids that meet SAE Type “U” specifications.
NOTE: Chains must be the proper size for the vehicle,
as recommended by the chain manufacturer. CAUTION! To avoid damage to your vehicle, tires or chains, observe the following
precautions:
• Because of limited chain clearance between tires and other suspen-
sion components, it is important that only chains in good condition
are used. Broken chains can cause serious vehicle damage. Stop the
vehicle immediately if noise occurs that could suggest chain break-
age. Remove the damaged parts of the chain before further use.
• Install chains as tightly as possible and then retighten after driving
about 1/2 mile (0.8 km).
• Do not exceed 45 mph (72 km/h).
• Drive cautiously and avoid severe turns and large bumps, especially
with a loaded vehicle.
• Do not install tire chains on front wheels of 4x2 vehicles.
• Do not drive for a prolonged period on dry pavement.
• Observe the tire chain manufacturer’s instructions on method
of installation, operating speed, and conditions for usage.
Always use the lower suggested operating speed of the chain
manufacturer if different than the speed recommended by the
manufacturer. STARTING AND OPERATING 323
5

These cautions apply to all chain traction devices, includ-
ing link and cable (radial) chains.
Tire chain use is permitted only on the rear tires of Ram
4X2 trucks.
NOTE: The use of class “U” chains is permitted on the
front and rear of 4X4, Ram Trucks with Dual Rear Wheels
and LT235/80R17E tires.
NOTE: On 4X2 Ram Trucks, class “U” snow chains are
permitted on the rear wheels only of vehicles equipped
with LT245/70R17, LT265/70R17, and LT235/80R17 size
tires.
NOTE: On 4X4 Single Rear Wheel (SRW) Ram Trucks,
class “U” snow chains are permitted on the rear wheels
only of vehicles equipped with LT265/70R17. CAUTION!Do not use tire chains on the 4X2 front wheels of
SRW (Single Rear Wheels) equipped with LT245/
70R17, LT265/70R17 tires or 4X4 front tires of Ram
Trucks equipped with LT265/70R17tires. There may
not be adequate clearance for the chains and you are
risking structural or body damage to your vehicle.
SNOW TIRES
Snow tires should be of the same size and type construc-
tion as the front tires. Consult the manufacturer of the
snow tire to determine any maximum vehicle speed
requirement associated with the tire. These tires should
always be operated at the vehicle maximum capacity
inflation pressures under any load condition.
While studded tires improve performance on ice, skid
and traction capability on wet or dry surfaces may be324 STARTING AND OPERATING

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.
The entire vehicle should first be weighed on a commer-
cial scale to insure that the GVWR has not been exceeded.
The weight on the front and rear of the vehicle should
then be determined separately to be sure that the load is
properly distributed over front and rear axle. Weighing
the vehicle may show that the GAWR of either the front
or rear axles has been exceeded but the total load is
within the specified GVWR. If so, weight must be shifted
from front to rear or rear to front as appropriate until the
specified weight limitations are met. Store the heavier
items down low and be sure that the weight is distributed
equally. Stow all loose items securely before driving.
STARTING AND OPERATING 339
5
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wheel. The nuts should then be tightened to recom-
mended torque. Tighten the nuts to final torque in
increments. Progress around the bolt circle, tightening
the nut opposite to the nut just previously tightened until
final torque is achieved. Recommended torques are
shown in the following chart.
Disc
Wheels Type Nut Stud Size Torque
Ft. Lbs. Torque
Newton
Meters
Cone 9/16-18 120-150 160-200
Flanged 9/16-18 130-160 190-220
To Stow The Flat Or Spare (If equipped)
Refer to Upfitters Body Builders Guide for information
on stowing your spare tire (If equipped). HOISTING
A conventional floor jack may be used at the jacking
locations, refer to the graphics that show jacking loca-
tions. However, a floor jack or frame hoist must never be
used on any other parts or the underbody.
CAUTION!Never use a floor jack directly under the differential
housing of a loaded truck or damage to your vehicle
may result. WHAT TO DO IN EMERGENCIES 381
6

Steering Wheel Mounted Sound System Controls . 226
Storage, Behind the Seat ................... 155
Storage Compartment, Center Seat ......... 155,157
Storage, Vehicle ......................... 461
Storing Your Vehicle ...................... 461
Supplemental Tire Pressure Information ........ 323
Synthetic Engine Oil ................... 260,403
System, Navigation ...................... 218
System, Remote Starting .................... 25
Tachometer ............................ 173
Tether Anchor, Child Restraint ............. 64,67
Tilt Steering Column ..................... 129
Tip Start .............................. 249
Tire and Loading Information Placard ...... 310,323
Tire Identification Number (TIN) ............. 308
Tire Markings .......................... 305
Tire Safety Information .................... 305
Tires ............................ 76, 314,509 Aging(LifeofTires) .................... 321
Air Pressure .......................... 314
Alignment ........................... 322
Chains .............................. 323
Changing ............................ 372
Compact Spare ........................ 318
Dual ............................ 326,378
General Information .................... 314
High Speed .......................... 317
Inflation Pressures ..................... 315
Jacking ............................. 372
LifeofTires .......................... 321
Load Capacity ...................... 310,311
Quality Grading ....................... 509
Radial .............................. 317
Replacement ......................... 321
Rotation ............................. 325
Safety ........................... 305,314
Sizes ............................... 306528 INDEX