tire type Ram 1500 2018 Owner's Guide

WARNING!(Continued)
•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 overloading and failure. You could lose
control and have a collision.
• Failure to equip your vehicle with tires having ad-
equate 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.
Tire Types
All Season Tires — If Equipped
All Season tires provide traction for all seasons (Spring,
Summer, Fall, and Winter). Traction levels may vary be-
tween 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 condi-
tions, 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 am-
bient temperatures are less than 40°F (5°C) or if roads are
covered with ice or snow. For more information, contact an
authorized dealer.
Summer tires do not contain the all season designation or
mountain/snowflake symbol on the tire sidewall. Use
Summer tires only in sets of four; failure to do so may
adversely affect the safety and handling of your vehicle.
WARNING!
Do not use Summer tires in snow/ice conditions. You
could lose vehicle control, resulting in severe injury or
death. Driving too fast for conditions also creates the
possibility of loss of vehicle control.
574 SERVICING AND MAINTENANCE

Snow Tires
Some areas of the country require the use of snow tires
during the Winter. Snow tires can be identified by a
“mountain/snowflake” symbol on the tire sidewall.If you need snow tires, select tires
equivalent in size and type to the origi-
nal equipment tires. Use snow tires only
in sets of four; failure to do so may
adversely affect the safety and handling
of your vehicle.
Snow tires generally have lower speed ratings than what
was originally equipped with your vehicle and should not
be operated at sustained speeds over 75 mph (120 km/h).
For speeds above 75 mph (120 km/h) refer to original
equipment or an authorized tire dealer for recommended
safe operating speeds, loading and cold tire inflation
pressures.
While studded tires improve performance on ice, skid and
traction capability on wet or dry surfaces may be poorer
than that of non-studded tires. Some states prohibit stud-
ded tires; therefore, local laws should be checked before
using these tire types.
Spare Tires — If Equipped
NOTE: For vehicles equipped with Tire Service Kit instead
of a spare tire, please refer to “Tire Service Kit” in “In Case
Of Emergency” for further information.
CAUTION!
Because of the reduced ground clearance, do not take
your vehicle through an automatic car wash with a
compact or limited use temporary spare installed.
Damage to the vehicle may result.
Spare Tire Matching Original Equipped Tire And
Wheel — If Equipped
Your vehicle may be equipped with a spare tire and wheel
equivalent in look and function to the original equipment
tire and wheel found on the front or rear axle of your
vehicle. This spare tire may be used in the tire rotation for
your vehicle. If your vehicle has this option, refer to an
authorized tire dealer for the recommended tire rotation
pattern.
Compact Spare Tire — If Equipped
The compact spare is for temporary emergency use only.
You can identify if your vehicle is equipped with a compact
8
SERVICING AND MAINTENANCE 575

Dark Vapor Chrome, Black Satin Chrome, or Low Gloss
Clear Coat Wheels
CAUTION!
If your vehicle is equipped with these specialty
wheels, DO NOT USE wheel cleaners, abrasives, or
polishing compounds. They will permanently damage
this finish and such damage is not covered by the New
Vehicle Limited Warranty. HAND WASH ONLY US-
ING MILD SOAP AND WATER WITH A SOFT
CLOTH. Used on a regular basis; this is all that is
required to maintain this finish.
Tire Chains (Traction Devices)
Use of traction devices require sufficient tire-to-body clear-
ance. Follow these recommendations to guard against
damage.
•Traction device must be of proper size for the tire, as
recommended by the traction device manufacturer.
Please follow the table below for proper tire size, chain
type, and axle recommendations:
Vehicle Axle Recommendations Tire SizesChain Class
1500 Models Rear OnlyP265/70R17 S Class
2500 Models Rear OnlyLT245/70R17E
LT275/70R18E U Class
2500 Power Wagon Models Rear OnlyLT285/70R17D U Class
3500 (Single Rear Wheel) Models Rear Only
LT275/70R18E U Class
3500 (Dual Rear Wheel) Models Front/Rear
LT235/80R17E U Class
8
SERVICING AND MAINTENANCE 579

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.
CAUTION!
To avoid damage to your vehicle or tires, observe the
following precautions:
•Because of restricted traction device clearance be-
tween tires and other suspension components, it is
important that only traction devices in good condi-
tion are used. Broken devices can cause serious
damage. Stop the vehicle immediately if noise occurs
that could indicate device breakage. Remove the
damaged parts of the device before further use.
• Install device as tightly as possible and then re-
tighten after driving about ½ mile (0.8 km).
• Do not exceed 30 mph (48 km/h).
• Drive cautiously and avoid severe turns and large
bumps, especially with a loaded vehicle.
• Do not drive for a prolonged period on dry pave-
ment.
(Continued)
CAUTION! (Continued)
•Observe the traction device manufacturer ’s instruc-
tions on the method of installation, operating speed,
and conditions for use. Always use the suggested
operating speed of the device manufacturer ’s if it is
less than 30 mph (48 km/h).
• Do not use traction devices on a compact spare tire.
Tire Rotation Recommendations
Tires on the front and rear axles of vehicles operate at
different loads and perform different steering, driving, and
braking functions. For these reasons, they wear at unequal
rates.
These effects can be reduced by timely rotation of tires. The
benefits of rotation are especially worthwhile with aggres-
sive tread designs such as those on all season type tires.
Rotation will increase tread life, help to maintain mud,
snow and wet traction levels and contribute to a smooth,
quiet ride.
Refer to the “Maintenance Plan” for the proper mainte-
nance intervals. More frequent rotation is permissible if
desired. The reasons for any rapid or unusual wear should
be corrected prior to rotation being performed.
580 SERVICING AND MAINTENANCE

To Help Maintain The Appearance Of Your Spray-On
Bedliner, Follow The Steps Below:
1. Rinse your truck bed out with water to remove anyloose dirt and debris.
2. Mix a mild soap or detergent with water with a soft cloth or brush.
3. Rinse bedliner with water.
4. Once dry, apply a small amount of Mopar Spray-On Bedliner Conditioner to a moist towel or sponge and
wipe over the entire surface of the truck bedliner.
WARNING!
Do not use silicon-based protection products to clean
your bedliner. Silicon-based products can become slip-
pery and may result in personal injury.
Spray-On Bedliners are chemically-resistant to many dif-
ferent types of chemicals (including gasoline, oil, hydraulic
fluids) for short periods of time. If a spill occurs on your
Spray-On Bedliner, rinse the truck out as soon as possible
to avoid permanent damage. Repairing The Spray-On Bedliner
While extremely tough, it is possible to damage a Spray-On
Bedliner. One common condition is when loading a heavy
pallet and dragging that pallet across the floor of the bed.
If a nail or sharp point is exposed under the weight of the
pallet a scratch or tear is possible. While not covered by
your new vehicle warranty, a cosmetic fix to cover the
metal exposed by the scratch is required. To repair a tear or
gouge, follow the directions provided in the Mopar Quick
Repair Kit.
INTERIORS
Seats And Fabric Parts
Use Mopar Total Clean to clean fabric upholstery and
carpeting.
WARNING!
Do not use volatile solvents for cleaning purposes.
Many are potentially flammable, and if used in closed
areas they may cause respiratory harm.
8
SERVICING AND MAINTENANCE 587

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 cali-
brated torque wrench using a high quality six sided (hex)
deep wall socket.
Torque Specifications
Lug Nut/
Bolt Torque Lug Nut/
Bolt Type **Lug Nut/
Bolt Size Lug Nut/
Bolt Socket Size
130 Ft-Lbs (176 N·m) Cone M14 x 1.50 22 mm
140 Ft-Lbs (190 N·m) Flanged
**Use only your authorized dealer recommended lug nuts/
bolts and clean or remove any dirt or oil before tightening. 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 lug nut/bolt and the
washer. Do not oil wheel studs.
Two-Piece Lug Nut
594 TECHNICAL SPECIFICATIONS

Fluid Level Check.....................553, 554
Fluid Type ..........................553, 607
Shifting ............................306, 315
Special Additives ........................ .553
Automatic Transmission Limp Home Mode ........304
Axle Fluid ............................556, 607
Axle Lubrication .......................... .556
Back-Up .................................410
Back-Up Camera .......................... .410
Bar, Stabilizer/Sway System ...................361
Battery ...............................191, 526
Charging System Light ....................191
Keyless Key Fob Replacement ................24
Belts, Seat ............................... .279
Body Builders Guide ..........................7
Body Mechanism Lubrication ..................541
B-Pillar Location .......................... .564
Brake Assist System ........................ .206
Brake Control System, Electronic ................205
Brake Fluid .......................... .552, 607
Brake System ..........................552, 593
Fluid Check ............................552
Master Cylinder ........................ .552
Parking ...............................295 Warning Light
.......................... .190
Brake/Transmission Interlock ..................299
Bulb Replacement ..........................452
Bulbs, Light .......................... .281, 452
Cab Top Clearance Lights .....................458
Camera .................................410
Camera, Rear ............................ .410
Camper .................................152
Capacities, Fluid .......................... .603
Caps, Filler Oil (Engine) ..................... .523, 529, 530
Power Steering ..........................394
Radiator (Coolant

Pressure).................549
Carbon Monoxide Warning ................279, 600
Cargo Light ...............................79
Car Washes ...............................585
Cellular Phone ............................654
Center High Mounted Stop Light ...............457
Center Seat Storage Compartment ...............123
Changing A Flat Tire ........................468
Chart, Tire Sizing .......................... .560
Check Engine Light (Malfunction Indicator Light). . . .201
Checking Your Vehicle For Safety ...............278
Checks, Safety ............................ .278
12
INDEX 683