2023 RAM CHASSIS CAB load capacity

SERVICING AND MAINTENANCE397
(Continued)
TIRES — GENERAL INFORMATION
Tire Pressure
Proper tire inflation pressure is essential to the
safe and satisfactory operation of your vehicle.
Four primary areas are affected by improper tire
pressure:
Safety
Fuel Economy
Tread Wear
Ride Comfort and Vehicle Stability
Safety Both underinflation and overinflation affect the
stability of the vehicle and can produce a feeling of
sluggish response or over responsiveness in the
steering.
NOTE:
Unequal tire pressures from side to side may
cause erratic and unpredictable steering
response.
Unequal tire pressure from side to side may
cause the vehicle to drift left or right.Fuel Economy
Underinflated tires will increase tire rolling
resistance resulting in higher fuel consumption.
Tread Wear
Improper cold tire inflation pressures can cause
abnormal wear patterns and reduced tread life,
resulting in the need for earlier tire replacement.
Ride Comfort And Vehicle Stability
Proper tire inflation contributes to a comfortable
ride. Overinflation produces a jarring and
uncomfortable ride.
Tire Inflation Pressures
The proper cold tire inflation pressure is listed on
the driver's side B-pillar or rear edge of the driver's
side door.
At least once a month:
Check and adjust tire pressure with a good
quality pocket-type pressure gauge. Do not
make a visual judgment when determining
proper inflation. Tires may look properly inflated
even when they are underinflated.
Inspect tires for signs of tire wear or visible
damage.
WARNING!
Overloading of your tires is dangerous.
Overloading can cause tire failure, affect vehicle
handling, and increase your stopping distance.
Use tires of the recommended load capacity for
your vehicle. Never overload them.
WARNING!
Improperly inflated tires are dangerous and
can cause collisions.
Underinflation increases tire flexing and can
result in overheating and tire failure.
Overinflation reduces a tire's ability to cushion
shock. Objects on the road and chuckholes
can cause damage that result in tire failure.
Overinflated or underinflated tires can affect
vehicle handling and can fail suddenly,
resulting in loss of vehicle control.
Unequal tire pressures can cause steering
problems. You could lose control of your
vehicle.
Unequal tire pressures from one side of the
vehicle to the other can cause the vehicle to
drift to the right or left.
Always drive with each tire inflated to the
recommended cold tire inflation pressure.
WARNING!
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398SERVICING AND MAINTENANCE
Inflation pressures specified on the placard are
always “cold tire inflation pressure”. Cold tire
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 sitting for a minimum of three hours. The cold
tire inflation pressure must not exceed the
maximum inflation 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 increased
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 pressure will
be too low.
Tire Pressures For High Speed Operation
The manufacturer advocates driving at safe
speeds and within posted speed limits. Where
speed limits or conditions are such that the vehicle
can be driven at high speeds, maintaining correct
tire inflation pressure is very important. Increased
tire pressure and reduced vehicle loading may be
required for high-speed vehicle operation. Refer to
an authorized tire dealer or original equipment
vehicle dealer for recommended safe operating
speeds, loading and cold tire inflation pressures.
Radial Ply Tires
Tire Repair
If your tire becomes damaged, it may be repaired if
it meets the following criteria:
The tire has not been driven on when flat.
The damage is only on the tread section of your
tire (sidewall damage is not repairable).
The puncture is no greater than ¼ of an inch
(6 mm).
Consult an authorized tire dealer for tire repairs
and additional information.
Damaged Run Flat tires, or Run Flat tires that have
experienced a loss of pressure should be replaced
immediately with another Run Flat tire of identical
size and service description (Load Index and
Speed Symbol). Replace the tire pressure sensor
as well as it is not designed to be reused.
CAUTION!
After inspecting or adjusting the tire pressure,
always reinstall the valve stem cap. This will
prevent moisture and dirt from entering the
valve stem, which could damage the valve stem.
WARNING!
High speed driving with your vehicle under
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 capacity at continuous
speeds above 75 mph (120 km/h).
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 ply tires in sets of
four. Never combine them with other types of
tires.

23_DPF_OM_EN_USC_t.book Page 398

SERVICING AND MAINTENANCE399
Run Flat Tires — If Equipped
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. When a Run Flat
tire is changed after being driven under a Run Flat
mode 14 psi (96 kPa) condition, please replace the
TPMS sensor as it is not designed to be reused.
NOTE:TPMS sensor must be replaced after driving the
vehicle on a flat tire condition.
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 System section
for more information.
Tire Spinning
When stuck in mud, sand, snow, or ice conditions,
do not spin your vehicle's wheels above 30 mph
(48 km/h) or for longer than 30 seconds
continuously without stopping.
Tread Wear Indicators
Tread wear indicators are in the original equipment
tires to help you in determining when your tires
should be replaced.

Tire Tread
These indicators are molded into the bottom of the
tread grooves. They will appear as bands when the
tread depth becomes 1/16 of an inch (1.6 mm).
When the tread is worn to the tread wear
indicators, the tire should be replaced.
Life Of Tire
The service life of a tire is dependent upon varying
factors including, but not limited to:
Driving style.
Tire pressure - Improper cold tire inflation pres
-
sures can cause uneven wear patterns to
develop across the tire tread. These abnormal
wear patterns will reduce tread life, resulting in
the need for earlier tire replacement.
Distance driven.
Performance tires, tires with a speed rating of V
or higher, and Summer tires typically have a
reduced tread life. Rotation of these tires per
the vehicle scheduled maintenance is highly
recommended.
WARNING!
Fast spinning tires can be dangerous. Forces
generated by excessive wheel speeds may
cause tire damage or failure. A tire could
explode and injure someone. Do not spin your
vehicle's wheels faster than 30 mph (48 km/h)
for more than 30 seconds continuously when
you are stuck, and do not let anyone near a
spinning wheel, no matter what the speed.
1 — Tread Wear Indicators
WARNING!
Tires and the spare tire should be replaced after
six years, regardless of the remaining tread.
Failure to follow this warning can result in
sudden tire failure. You could lose control and
have a collision resulting in serious injury or
death.
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400SERVICING AND MAINTENANCE
NOTE:Wheel valve stem must be replaced as well when
installing new tires due to wear and tear in existing
tires.
Keep dismounted tires in a cool, dry place with as
little exposure to light as possible. Protect tires
from contact with oil, grease, and gasoline.
Replacement Tires
The tires on your new vehicle provide a balance of
many characteristics. They should be inspected
regularly for wear and correct cold tire inflation
pressures. The manufacturer strongly
recommends that you use tires equivalent to the
originals in size, quality and performance when
replacement is needed Úpage 399. Refer to the
Tire And Loading Information Placard or the
Vehicle Certification Label for the size designation
of your tire. The Load Index and Speed Symbol for
your tire will be found on the original equipment
tire sidewall.
For more information relating to the Load Index
and Speed Symbol of a tire Ú page 389.
It is recommended to replace the two front tires or
two rear tires as a pair. Replacing just one tire can
seriously affect your vehicle’s handling. If you ever
replace a wheel, make sure that the wheel’s
specifications match those of the original wheels. It is recommended you contact an authorized tire
dealer or original equipment dealer with any
questions you may have on tire specifications or
capability. Failure to use equivalent replacement
tires may adversely affect the safety, handling, and
ride of your vehicle.
TIRE TYPES
All Season Tires — If Equipped
All Season tires provide traction for all seasons
(Spring, Summer, Autumn, and Winter). Traction
levels may vary between different all season tires.
All season tires can be identified by the M+S, M&S,
M/S or MS designation on the tire sidewall. Use all
season tires only in sets of four; failure to do so
may adversely affect the safety and handling of
your vehicle.
Summer Or Three Season Tires —
If Equipped
Summer tires provide traction in both wet and dry
conditions, and are not intended to be driven in
snow or on ice. If your vehicle is equipped with
Summer tires, be aware these tires are not
designed for Winter or cold driving conditions.
Install Winter tires on your vehicle when ambient
temperatures are less than 40°F (5°C) or if roads
are covered with ice or snow. For more
information, contact an authorized dealer.
WARNING!
Do not use a tire, wheel size, load rating, or
speed rating other than that specified for your
vehicle. Some combinations of unapproved
tires and wheels may change suspension
dimensions and performance characteristics,
resulting in changes to steering, handling, and
braking of your vehicle. This can cause unpre
-
dictable handling and stress to steering and
suspension components. You could lose
control and have a collision resulting in
serious injury or death. Use only the tire and
wheel sizes with load ratings approved for
your vehicle.
Never use a tire with a smaller load index or
capacity, other than what was originally
equipped on your vehicle. Using a tire with a
smaller load index could result in tire over -
loading and failure. You could lose control and
have a collision.
Failure to equip your vehicle with tires having
adequate speed capability can result in
sudden tire failure and loss of vehicle control.
CAUTION!
Replacing original tires with tires of a different
size may result in false speedometer and
odometer readings.

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431

Enhanced Accident Response Feature
.. 302, 341
Ethanol.......................................................... 414Exhaust Brake............................................... 129Exhaust Gas Cautions.................................... 324Exhaust System.......................... 324, 367, 375Exterior Lighting............................................... 51Exterior Lights......................................... 51, 324
F
Family Alerts.................................................. 258Filters Air Cleaner................................................. 355Air Conditioning.................................. 65, 358Engine Fuel..................................... 360, 419Engine Oil........................................ 354, 419Engine Oil Disposal................................... 354FlashersTurn Signals..............................54, 110, 324Flash-To-Pass.................................................. 52Flat Tire Stowage........................................... 332Fluid Capacities............................................. 418Fluid Leaks.................................................... 324Fluid Level ChecksBrake........................................................ 371Power Steering.......................................... 148Fog Lights............................................... 54, 387Fold Flat Load Floor......................................... 68Fold-Flat Seats................................................. 31Forward Collision Warning............................. 278Four Wheel Drive........................................... 140
Four-Way Hazard Flasher.............................. 325Freeing A Stuck Vehicle................................ 338Front Axle (Differential)................................. 374Fuel............................................. 177, 413, 415Adding...................................................... 177Additives................................................... 413Clean Air................................................... 413Diesel.............................................. 177, 415Ethanol..................................................... 414Filler Cap (Gas Cap).................................. 177Filter................................................ 360, 419Gasoline................................................... 413Light......................................................... 107Materials Added....................................... 413Methanol.................................................. 414Octane Rating........................................... 413Requirements.................................. 413, 415Specifications........................................... 416Tank Capacity........................................... 418Fuses............................................................ 377
G
Garage Door Opener (HomeLink®).................. 47Gas Cap (Fuel Filler Cap).............................. 177Gasoline, Clean Air........................................ 413Gasoline, Reformulated................................ 413GaugesVoltage..................................................... 122Gear Ranges................................................. 135Gear Selector Override................................. 336
Glass Cleaning.............................................. 410Glove Compartment Storage............................65Gross Axle Weight Rating.............................. 182Gross Vehicle Weight Rating......................... 181GuideBody Builders...............................................10GVWR............................................................ 180
H
HazardDriving Through Flowing, Rising, Or Shallow Standing Water
.................................... 198Hazard Warning Flashers.............................. 325Head Restraints...............................................36Head Rests......................................................36Headlights..................................................... 386Automatic High Beam..................................52Cleaning.................................................... 408High Beam...................................................52Lights On Reminder.....................................54Passing........................................................52Switch..........................................................51Heated Mirrors.................................................46Heated Seats...................................................35Hill Descent Control...................................... 274Hill Descent Control Indicator....................... 274Hill Start Assist.............................................. 276HitchesTrailer Towing........................................... 185
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434 O
Occupant Restraints
...................................... 288Octane Rating, Gasoline (Fuel)...................... 413Oil Filter, Change........................................... 354Oil Filter, Selection......................................... 354Oil life Reset
b
............................................... 92Oil Pressure Light.......................................... 104Oil Reset.......................................................... 92Oil, Engine........................................... 353, 419Capacity.................................................... 418Dipstick..................................................... 352Disposal.................................................... 354Filter................................................ 354, 419Filter Disposal........................................... 354Identification Logo..................................... 354Materials Added To................................... 354Pressure Warning Light............................. 104Recommendation............................ 353, 354Synthetic................................................... 354Onboard Diagnostic System.......................... 111Operating Precautions................................... 111Operator Manual Owner's Manual........................................ 426Outside Rearview Mirrors................................ 42Overdrive....................................................... 138Overdrive OFF Switch..................................... 138Overheating, Engine...................................... 335
P
Paint Care..................................................... 407Pair (link) Uconnect Phone To A
mobile Phone
b
.......................................... 236Panic Alarm...................................................... 16Parking Brake............................................... 128ParkSenseFront And Rear......................................... 159ParkSense System, Rear.............................. 159Passive Entry................................................... 25Pedals, Adjustable........................................... 38Pedestrian Warning System.......................... 280Pets.............................................................. 322Phone Mode................................................. 234Placard, Tire And Loading Information.......... 394PowerDistribution Center (Fuses)....................... 377Door Locks.................................................. 24Mirrors......................................................... 43Outlet (Auxiliary Electrical Outlet)......... 71, 72Outside Mirror Lights................................... 46Seats........................................................... 33Sliding Rear Window.................................... 76Steering.................................................... 148Take-Off Adapter...................................... 147Take-Off Operation................................... 147Windows...................................................... 74
Power SeatsDown...........................................................33Forward.......................................................33Rearward.....................................................33Recline.........................................................33Tilt................................................................33Up................................................................33Power Steering Fluid..................................... 421Pregnant Women And Seat Belts.................. 294Preparation For Jacking................................ 329Presets.......................................................... 230Profile Settings.............................................. 202Programmable Features............................... 199PTO (Power Take-Off).................................... 147
R
Radial Ply Tires.............................................. 398Radiator Cap (Coolant Pressure Cap)... 368, 369RadioPresets..................................................... 230Settings.................................................... 199Radio Controls.............................................. 224Radio Mode................................................... 224Radio Operation................................... 224, 263Radio Remote Controls................................. 224Rain Sensitive Wiper System...........................58

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437
Tires
................................... 323, 397, 401, 406Aging (Life Of Tires)................................... 399Air Pressure............................................... 397Chains....................................................... 404Changing................................................... 329Compact Spare......................................... 401Dual........................................ 332, 406, 411General Information........................ 397, 401High Speed................................................ 398Inflation Pressure...................................... 397Jacking...................................................... 329Life Of Tires............................................... 399Load Capacity............................................ 394
Pressure Monitoring System (TPMS)... 107, 280
Quality Grading.......................................... 406Radial........................................................ 398Replacement............................................. 400Rotation.................................................... 405Safety.............................................. 389, 397Sizes.......................................................... 390Snow Tires................................................. 401Spare Tires...................................... 401, 402Spinning.................................................... 399Trailer Towing............................................ 187Tread Wear Indicators............................... 399Wheel Nut Torque..................................... 411
To Open Hood.................................................. 77Tongue Weight/Trailer Weight...................... 186Torque Converter Clutch............................... 139Towing................................................. 181, 339Disabled Vehicle....................................... 339Guide........................................................ 186Recreational............................................. 194Weight...................................................... 186Towing Behind A Motorhome........................ 194Traction......................................................... 197Traction Control............................................ 277Trailer Sway Control (TSC)............................. 277Trailer Towing............................................... 181Hitches..................................................... 185Minimum Requirements........................... 186Mirrors......................................................... 42Tips........................................................... 192Trailer And Tongue Weight........................ 186Wiring....................................................... 190Trailer Towing Guide..................................... 186Trailer Weight................................................ 186Transfer Case............................................... 374Electronically Shifted....................... 140, 143Fluid......................................................... 421
Transmission................................................. 132Automatic............................... 132, 135, 372Fluid.......................................................... 421Maintenance............................................ 372Shifting..................................................... 130Transporting Pets.......................................... 322Tread Wear Indicators................................... 399Turn Signals.................................. 54, 110, 386
U
Uconnect Phone Call Features
................................. 239Things You Should Know About YourUconnect Phone................................... 242Uconnect Phone............................................ 236Answer Or Ignore An Incoming Call — Call Currently In Progress..................... 241Answer Or Ignore An Incoming Call — No Call Currently In Progress................ 240Bluetooth Communication Link................ 244Call Continuation...................................... 242Call Controls............................................. 240Call Termination....................................... 242Cancel Command..................................... 236
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