2020 Ram 1500 tires

532 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 “moun-
tain/snowflake” symbol on the tire sidewall.
If you need snow tires, select tires equivalent in size
and type to the original 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 studded 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 Emer
-
gency” for further information.
Refer to the “Towing Requirements - Tires” in “Starting And
Operating” for restrictions when towing with a spare tire
designated for temporary emergency use.
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.
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.
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536 SERVICING AND MAINTENANCE
(Continued)
Dark Vapor Chrome, Black Satin Chrome, or Low Gloss
Clear Coat Wheels
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:
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 USING MILD
SOAP AND WATER WITH A SOFT CLOTH. Used on a
regular basis; this is all that is required to maintain this
finish.
Vehicle Axle Recom
-
mendations Tire Sizes Chain Class
1500 Models Rear Only 275/65R18
275/55R20S Class
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 between tires and other suspension components, it is important
that only traction devices in good condition 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.
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SERVICING AND MAINTENANCE 537
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. Rota -tion 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 maintenance
intervals. More frequent rotation is permissible if desired.
The reasons for any rapid or unusual wear should be
corrected prior to rotation being performed.
The suggested rotation method is the “rearward cross”
shown in the following diagram. This rotation pattern does
not apply to some directional tires that must not be reversed.
Tire Rotation (Rearward Cross)
• Install device as tightly as possible and then retighten
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 pavement.
• Observe the traction device manufacturer’s instruc -
tions on the method of installation, operating speed,
and conditions for use. Always use the suggested oper -
ating 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. CAUTION!
(Continued)
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538 SERVICING AND MAINTENANCE
DEPARTMENT OF TRANSPORTATION UNIFORM
TIRE QUALITY GRADES
The following tire grading categories were established by
the National Highway Traffic Safety Administration. The
specific grade rating assigned by the tire's manufacturer
in each category is shown on the sidewall of the tires on
your vehicle.
All passenger vehicle tires must conform to Federal safety
requirements in addition to these grades.
Treadwear
The Treadwear grade is a comparative rating, based on
the wear rate of the tire when tested under controlled
conditions on a specified government test course. For
example, a tire graded 150 would wear one and one-half
times as well on the government course as a tire graded
100. The relative performance of tires depends upon the
actual conditions of their use, however, and may depart
significantly from the norm due to variations in driving
habits, service practices, and differences in road charac-
teristics and climate. Traction Grades
The Traction grades, from highest to lowest, are AA, A, B,
and C. These grades represent the tire's ability to stop on wet
pavement, as measured under controlled conditions on spec
-
ified government test surfaces of asphalt and concrete. A tire
marked C may have poor traction performance.
Temperature Grades
The Temperature grades are A (the highest), B, and C, repre -
senting the tire's resistance to the generation of heat and its
ability to dissipate heat, when tested under controlled condi -
tions on a specified indoor laboratory test wheel.
WARNING!
The traction grade assigned to this tire is based on
straight-ahead braking traction tests, and does not
include acceleration, cornering, hydroplaning, or peak
traction characteristics.
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SERVICING AND MAINTENANCE 539
Sustained high temperature can cause the material of the
tire to degenerate and reduce tire life, and excessive
temperature can lead to sudden tire failure. The grade C
corresponds to a level of performance, which all
passenger vehicle tires must meet under the Federal
Motor Vehicle Safety Standard No. 109. Grades B and A
represent higher levels of performance on the laboratory
test wheel, than the minimum required by law.
STORING THE VEHICLE
If you are storing your vehicle for more than 21 days, we
recommend that you take the following steps to minimize
the drain on your vehicle's battery:
• Disconnect the negative cable from battery.
• Any time you store your vehicle or keep it out of service(i.e., vacation) for two weeks or more, run the air condi -
tioning system at idle for about five minutes in the fresh air and high blower setting. This will ensure adequate system
lubrication to minimize the possibility of compressor
damage when the system is started again.
BODYWORK
Protection From Atmospheric Agents
Vehicle body care requirements vary according to
geographic locations and usage. Chemicals that make roads
passable in snow and ice and those that are sprayed on trees
and road surfaces during other seasons are highly corrosive
to the metal in your vehicle. Outside parking, which exposes
your vehicle to airborne contaminants, road surfaces on
which the vehicle is operated, extreme hot or cold weather
and other extreme conditions will have an adverse effect on
paint, metal trim, and underbody protection.
The following maintenance recommendations will enable
you to obtain maximum benefit from the corrosion resistance
built into your vehicle.
WARNING!
The temperature grade for this tire is established for a
tire that is properly inflated and not overloaded.
Excessive speed, under-inflation, or excessive loading,
either separately or in combination, can cause heat
buildup and possible tire failure.
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594 MULTIMEDIA
NOTE:
For further information about Trailer Tire Pressure Monitoring, refer to ”Auxiliary Driving Systems” in “Safety.”Tire Pressure
Are you sure you want to delete the Tire Pressure Settings for Trailer 1?
Yes No
Number Of Axles
+ -
Number Of Tires
+ -
NOTE:
After pressing Next, the Target Pressure screen appears. The default for this option is 50 PSI (344 kPa), however the range is
selectable anywhere between 25–125 PSI (172–862 kPa). Once PSI (kPa) is programmed the pairing screen appears. Tire
sensors must be paired in order shown. Starting with Tire 1, deflate tire by 5 PSI (34 kPa) and wait for a horn chirp. Repeat
process until complete. Do not exit the pairing screen until process is complete. If pairing has been unsuccessful, a double
horn chirp will sound, and a prompt on the touchscreen will allow you to retry the procedure “Retry” will only appear when
setup fails. Each tire must be successfully paired during a single pairing process to receive the success screen. Trailer Name List of Trailer Names
NOTE:
You can select and personalize your trailer name depending on the type of trailer you are hauling. Select the trailer name
from the following list: trailer, boat, car, cargo, dump, equipment, flatbed, gooseneck, horse, livestock, motorcycle, snowmo -
bile, travel, utility, and 5th wheel. Setting Name
Selectable Options
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616 MULTIMEDIA
Once selecting the specific trailer, the following programmable options become available:Setting Name Selectable Options
Use This Trailer On Off
Braking Light Electric Surge None Light Electric
Over
Hydraulic Heavy
Electric Heavy
Electric Over Hydraulic
Tire Pressure Are you sure you want to delete the Tire Pressure Settings for Trailer 1?
Yes No
Number Of Axles
+ -
Number Of Tires
+ -
NOTE:
After pressing Next, the Target Pressure screen appears. The default for this option is 50 PSI (344 kPa), however the range is
selectable anywhere between 25–125 PSI (172–862 kPa). Once PSI (kPa) is programmed the pairing screen appears. Tire
sensors must be paired in order shown. Starting with Tire 1, deflate tire by 5 PSI (34 kPa) and wait for a horn chirp. Repeat
process until complete. Do not exit the pairing screen until process is complete. If pairing has been unsuccessful, a double
horn chirp will sound, and a prompt on the touchscreen will allow you to retry the procedure “Retry” will only appear when
setup fails. Each tire must be successfully paired during a single pairing process to receive the success screen.
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657
INDEX
A
Adaptive Cruise Control (ACC) (Cruise Control) ............. 340
Adding Engine Coolant (Antifreeze) ................................... 508
Adding Fuel ............................................................................. 403
Additives, Fuel ........................................................................ 550
Adjust Down....................................................................................... 46
Forward .................................................................................. 46
Rearward ................................................................................ 46
Up ............................................................................................ 46
Adjustable Pedals...................................................................... 58
Air Bag Air Bag Operation ............................................................... 249Air Bag Warning Light ............................................... 246, 250
Enhanced Accident Response ................................... 262, 481
Event Data Recorder (EDR) ............................................... 481
Front Air Bag ....................................................................... 250If Deployment Occurs ........................................................ 261
Knee Impact Bolsters .......................................................... 257Maintaining Your Air Bag System.................................... 263
Maintenance......................................................................... 263
Redundant Air Bag Warning Light .................................. 247
Transporting Pets ................................................................ 285
Air Bag Light ........................................................... 179, 246, 287 Air Cleaner, Engine (Engine Air Cleaner Filter).................494
Air Conditioner Maintenance ...............................................496
Air Conditioner Refrigerant ..........................................496, 497
Air Conditioner System..........................................................496
Air Conditioning ................................................................. 78, 90
Air Conditioning Filter .....................................................93, 497
Air Conditioning System .........................................................91
Air Conditioning, Operating Tips ..........................................92
Air Filter ...................................................................................494
Air Pressure Tires .......................................................................................526
Air Suspension ................................................................319, 325
Alarm Panic ........................................................................................20
Security Alarm ...............................................................33, 180
Alterations/Modifications Vehicle.....................................................................................15
Android Auto ..........................................................................647
Antifreeze (Engine Coolant) ..........................................507, 553 Disposal ................................................................................509
Anti-Lock Brake System (ABS) .............................................198
Anti-Lock Warning Light.......................................................187
Apple CarPlay .........................................................................648
Assist, Hill Start .......................................................................207
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