wheel size RAM CHASSIS CAB 2022 Owner's Manual

388SERVICING AND MAINTENANCE
Do not install a wheel cover or attempt to mount a
conventional tire on the compact spare wheel,
since the wheel is designed specifically for the
compact spare tire. Do not install more than one
compact spare tire and wheel on the vehicle at any
given time.
Collapsible Spare Tire — If Equipped
The collapsible spare is for temporary emergency
use only. You can identify if your vehicle is
equipped with a collapsible spare by looking at the
spare tire description on the Tire and Loading
Information Placard located on the driver’s side
door opening or on the sidewall of the tire.
Collapsible spare tire description example:
165/80-17 101P. Since this tire has limited tread life, the original
equipment tire should be repaired (or replaced)
and reinstalled on your vehicle at the first
opportunity.
Inflate collapsible tire only after the wheel is
properly installed to the vehicle. Inflate the
collapsible tire using the electric air pump before
lowering the vehicle.
Do not install a wheel cover or attempt to mount a
conventional tire on the collapsible spare wheel,
since the wheel is designed specifically for the
collapsible spare tire.
Full Size Spare — If Equipped
The full size spare is for temporary emergency use
only. This tire may look like the originally equipped
tire on the front or rear axle of your vehicle, but it is
not. This spare tire may have limited tread life.
When the tread is worn to the tread wear
indicators, the temporary use full size spare tire
needs to be replaced. Since it is not the same as
your original equipment tire, replace (or repair) the
original equipment tire and reinstall on the vehicle
at the first opportunity.
Limited Use Spare — If Equipped
The limited use spare tire is for temporary
emergency use only. This tire is identified by a label
located on the limited use spare wheel. This label
contains the driving limitations for this spare. This
tire may look like the original equipped tire on the
front or rear axle of your vehicle, but it is not.
Installation of this limited use spare tire affects
vehicle handling. Since it is not the same as your
original equipment tire, replace (or repair) the
original equipment tire and reinstall on the vehicle
at the first opportunity.
WARNING!

Compact and collapsible spares are for temporary
emergency use only. With these spares, do not
drive more than 50 mph (80 km/h). Temporary
use spares have limited tread life. When the tread
is worn to the tread wear indicators, the
temporary use spare tire needs to be replaced. Be
sure to follow the warnings, which apply to your
spare. Failure to do so could result in spare tire
failure and loss of vehicle control.

WARNING!

Compact and Collapsible spares are for temporary
emergency use only. With these spares, do not
drive more than 50 mph (80 km/h). Temporary
use spares have limited tread life. When the tread
is worn to the tread wear indicators, the
temporary use spare tire needs to be replaced. Be
sure to follow the warnings, which apply to your
spare. Failure to do so could result in spare tire
failure and loss of vehicle control.

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390SERVICING AND MAINTENANCE
SNOW TRACTION DEVICES
Use of traction devices require sufficient tire-to-body clearance. Due to limited clearance, the following snow traction devices are recommended. Follow these
recommendations to guard against damage:
Snow traction device must be of proper size for the tire, as recommended by the snow traction device manufacturer.
No other tire sizes are recommended for use with the snow traction device.
Please follow the table below for the recommended tire size, axle and snow traction device:
3500 SRW CAB CHASSIS
Trim Level Axle
Tire/Wheel SizeSnow Traction Device (maximum projection
beyond tire profile or equivalent)
4x2
4x4 Rear
LT275/70R18E U Class
3500 DRW CAB CHASSIS
Trim Level Axle
Tire/Wheel SizeSnow Traction Device (maximum projection
beyond tire profile or equivalent)
4x2 Rear
LT235/80R17E U Class
4x4 Front/Rear
4500/5500 DRW CAB CHASSIS
Trim Level Axle
Tire/Wheel SizeSnow Traction Device (maximum projection
beyond tire profile or equivalent)
4x2 Rear225/70R19.5G U Class
4x4
WARNING!
Using tires of different size and type (M+S, Snow) between front and rear axles can cause unpredictable handling. You could lose control and have a collision.

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397
TECHNICAL SPECIFICATIONS
VEHICLE IDENTIFICATION NUMBER (VIN)
The VIN is found on the left front corner of the
instrument panel, visible through the windshield.
Vehicle Identification Number

NOTE:It is illegal to remove or alter the VIN.
BRAKE SYSTEM
If power assist is lost for any reason (for example,
repeated brake applications with the engine off),
the brakes will still function. However, you will
experience a substantial increase in braking effort
to stop the vehicle. If either the front or rear hydraulic system loses
normal braking capability, the remaining system
will still function with some loss of overall braking
effectiveness. This will be evident by increased
pedal travel during application, greater pedal force
required to slow or stop, and activation of the
Brake Warning Light and/or the ABS Warning Light
during brake use.
HYDRAULIC BRAKE ASSIST —
I
F EQUIPPED
The brake system power assist is provided by a
hydro-boost unit which shares fluid with the power
steering system. You may experience some
clicking or hissing noises from the hydro-boost
system during hard braking conditions.
NOTE:Under cold temperatures, pedal effort will be
higher than normal until the power steering fluid
reaches operating temperature.
WHEEL AND TIRE TORQUE SPECIFICATIONS
Proper lug nut/bolt torque is very important to
ensure that the wheel is properly mounted to the
vehicle. Any time a wheel has been removed and
reinstalled on the vehicle, the lug nuts/bolts
should be torqued using a properly calibrated
torque wrench using a six-sided (hex) deep wall
socket.
TORQUE SPECIFICATIONS
**Use only authorized dealer recommended lug nuts/
bolts and clean or remove any dirt or oil before tightening.
Lug Nut/
Bolt
Torque Lug Nut/
Bolt Type **Lug
Nut/Bolt Size Lug Nut/
Bolt
Socket Size
130 Ft-Lb
(176 N·m) Cone
M14 x
1.50 22 mm
129 Ft-Lb
(175 N·m) Flanged
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421
Storage, Vehicle
...................................... 60, 393Store Radio Presets....................................... 219Storing Your Vehicle...................................... 393Sunglasses Storage......................................... 64Sway Control, Trailer...................................... 266Synthetic Engine Oil....................................... 342
T
Telescoping Steering Column.......................... 27Temperature Control, Automatic (ATC)............ 60Tilt Down........................................................... 32Up................................................................ 32Tilt Steering Column........................................ 27Tip Start............................................... 107, 109Tire And Loading Information Placard........... 380Tire Markings................................................. 376Tire Safety Information.................................. 376Tires................................... 309, 383, 387, 392Aging (Life Of Tires)................................... 385Air Pressure............................................... 383Chains....................................................... 390Changing................................................... 315Compact Spare......................................... 387Dual........................................ 318, 392, 397General Information........................ 383, 387High Speed................................................ 384Inflation Pressure...................................... 383Jacking...................................................... 315Life Of Tires............................................... 385
Load Capacity........................................... 380Pressure Monitoring System (TPMS)..99, 268Quality Grading......................................... 392Radial....................................................... 384Replacement............................................ 386Rotation.................................................... 391Safety.............................................. 376, 383Sizes......................................................... 377Snow Tires................................................ 387Spare Tires...................................... 387, 388Spinning................................................... 385Trailer Towing........................................... 178Tread Wear Indicators.............................. 385Wheel Nut Torque..................................... 397To Open Hood.................................................. 73Tongue Weight/Trailer Weight...................... 177Torque Converter Clutch............................... 131Tow Mode Mirror.............................................. 39Towing................................................. 173, 325Disabled Vehicle....................................... 325Guide........................................................ 176Recreational............................................. 185Weight...................................................... 176Towing Behind A Motorhome........................ 185Traction......................................................... 188Traction Control............................................ 265Trailer Sway Control (TSC)............................. 266Trailer Towing............................................... 173Hitches..................................................... 176Minimum Requirements........................... 177
Mirrors.........................................................42Tips........................................................... 182Trailer And Tongue Weight........................ 177Wiring....................................................... 181Trailer Towing Guide..................................... 176Trailer Weight................................................ 176Transfer Case................................................ 361Electronically Shifted....................... 132, 135Fluid.......................................................... 407Transmission................................................. 122Automatic............................... 122, 126, 358Fluid.......................................................... 407Maintenance............................................ 358Shifting..................................................... 121Transporting Pets.......................................... 307Tread Wear Indicators................................... 385Turn Signals.................................. 50, 102, 373
U
UconnectPhone Call Features
................................. 228Things You Should Know About Your Uconnect Phone................................... 231Uconnect Phone............................................ 225Answer Or Ignore An Incoming Call — Call Currently In Progress..................... 230Answer Or Ignore An Incoming Call — No Call Currently In Progress................ 229Bluetooth Communication Link................ 233Call Continuation...................................... 231
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