wheel size RAM CHASSIS CAB 2021 Owner's Manual

SERVICING AND MAINTENANCE423
3500 DRW CAB CHASSIS
Trim Level Axle
Tire/Wheel Size Snow 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 Size Snow 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.8

21_DPF_OM_EN_USC_t.book Page 423

432TECHNICAL SPECIFICATIONS
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. Inspect the wheel mounting surface prior to
mounting the tire and remove any corrosion or
loose particles.
NOTE:
Dual wheels are flat mounted, center piloted.
The lug nuts are a two-piece assembly. When
the tires are being rotated or replaced, clean
these lug nuts and add two drops of oil at the
interface between the hex and the washer.
Ensure that the socket is fully engaged on the
lug nut/bolt (do not insert it half way).

Oil Interface Location
Do not oil wheel studs. For chrome wheels, do
not substitute with chrome plated wheel nuts.

Wheel Mounting Surface

Retighten the wheel nuts in the same sequence
to the torques listed in the table. Go through the
sequence a second time to verify that specific
torque has been achieved. Retighten to
specifications after 25 miles (40 km) and check
the lug nut/bolt torque to be sure that all the lug
nuts/bolts are properly tightened.

Lug Nut/Bolt
Torque
Lug
Nut/Bolt
Type**Lug
Nut/Bolt
Size Lug Nut/
Bolt
Socket
Size
120-150
Ft-Lbs
(160-200 N·m) Cone
M14 x
1.50 22 mm
130-160
Ft-Lbs
(190-220 N·m) Flanged

21_DPF_OM_EN_USC_t.book Page 432

458 Rotation
.................................................... 424Safety.............................................. 406, 414Sizes.......................................................... 407Snow Tires................................................. 419Spare Tires............................. 419, 420, 421Spinning.................................................... 416Trailer Towing............................................ 206Tread Wear Indicators............................... 417Wheel Nut Torque..................................... 432To Open Hood.................................................. 79Tongue Weight/Trailer Weight....................... 205Torque Converter Clutch................................ 151Towing................................................. 200, 350Disabled Vehicle........................................ 350Guide......................................................... 205Recreational.............................................. 214Weight....................................................... 205Towing Behind A Motorhome......................... 214Traction......................................................... 218Traction Control............................................. 281Trailer Sway Control (TSC)............................. 281Trailer Towing................................................ 200Hitches...................................................... 204Minimum Requirements............................ 205Mirrors......................................................... 46Tips........................................................... 211Trailer And Tongue Weight........................ 205Wiring........................................................ 209Trailer Towing Guide...................................... 205Trailer Weight................................................ 205
Transfer Case............................................... 391Electronically Shifted....................... 153, 156Fluid......................................................... 444Transmission................................................ 141Automatic............................... 141, 146, 387Fluid......................................................... 444Maintenance............................................ 387Shifting..................................................... 140Transporting Pets.......................................... 330Tread Wear Indicators.................................. 417Turn Signals.................................. 54, 115, 402
U
UconnectPhone Call Features
................................. 264Things You Should Know About Your Uconnect Phone................................... 267Uconnect Phone.................................. 259, 260Answer Or Ignore An Incoming Call — Call Currently In Progress..................... 265Answer Or Ignore An Incoming Call — No Call Currently In Progress................ 265Bluetooth Communication Link................ 269Call Continuation...................................... 266Call Controls............................................. 264Call Termination....................................... 266Cancel Command..................................... 260Connecting To A Particular Mobile Phone Or Audio Device After Pairing............... 262
Help Command......................................... 260Join Calls.................................................. 266Making A Phone Or Audio Device A Favorite................................................ 262Making A Second Call While Current Call Is In Progress................................. 266Managing Your Favorites.......................... 263Natural Speech......................................... 259Operation.................................................. 259Overview................................................... 258Pair (Link) Uconnect Phone To A Mobile Phone....................................... 260Phonebook Download............................... 263Place/Retrieve A Call From Hold............... 266Power-Up.................................................. 269Recent Calls.............................................. 264Redial....................................................... 266To Remove A Favorite............................... 263Toggling Between Calls............................. 266Touch-Tone Number Entry........................ 264Transfer Call To And From Mobile Phone.. 266Voice Command....................................... 267Uconnect SettingsCustomer Programmable Features..............26Passive Entry Programming.........................26Uconnect System.......................................... 244Uniform Tire Quality Grades.......................... 425Unleaded Gasoline........................................ 433Untwisting Procedure, Seat Belt.................... 297USB..................................................................72

21_DPF_OM_EN_USC_t.book Page 458