2023 Ram Pickup 1500 Light Truck SERVICING AND MAINTENANCE -> Tires & Wheels User Manual

MY CAR USER MANUAL

SERVICING AND MAINTENANCE -> Tires and Wheels for Your Ram Pickup 1500 Light Truck 2023

368 SERVICING AND MAINTENANCE  
Side Marker Lamp  
FOG LAMPS — IF EQUIPPED  
CAUTION!  
See the following steps to replace:  
1. Open the hood.  
Please see an authorized dealer for service on LED and  
Halogen front fog lamps.  
Do not contaminate the bulb glass by touching it with  
your fingers or by allowing it to contact other oily  
surfaces. Shortened bulb life will result.  
Halogen  
2. Disconnect and isolate the negative battery cable.  
See the following steps to replace:  
3. Locate the side marker lamp, which can be found on  
the back side of the headlamps.  
1. Reach under and behind the front fascia/bumper to  
access the back of the front fog lamp housing.  
REAR TAIL/STOP, TURN SIGNAL AND BACKUP  
LAMPS  
2. Disconnect the fog lamp wiring harness connector  
from the fog lamp bulb.  
1. Remove the two screws and pushpin retainers that  
pass through the bed sheet metal.  
Side Marker Lamp  
4. Disengage the side marker socket by rotating  
counterclockwise a quarter turn.  
Fog Lamp Bulb  
5. Pull the socket and bulb straight out from the  
housing.  
Tail Lamp Locations  
3. Rotate the bulb counterclockwise a quarter turn to  
unlock the bulb from the housing.  
1 — Tail Lamp  
6. Separate the bulb from the socket without twisting.  
2 — Fasteners  
4. Pull the bulb straight out from the housing.  
7. Reverse the procedure for installation of new bulb  
and covers.  
3 — Pushpin Retainers  
5. Reverse the procedure to install the bulb and cover.  
SERVICING AND MAINTENANCE 369  
2. Pull the outboard side of the lamp rearward far  
enough to unsnap the two receptacles on the  
outboard side of the lamp housing from the two  
plastic snap post retainers in the outer box side  
panel.  
4. Rotate the bulb socket counterclockwise a quarter  
turn to unlock it from the housing.  
2. Separate the connector holding the housing and  
wiring harness to the body.  
5. Pull the bulb straight out of the socket.  
CAUTION!  
Do not contaminate the bulb glass by touching it with  
your fingers or by allowing it to contact other oily  
surfaces. Shortened bulb life will result.  
6. Reverse the procedure to install the bulb and  
housing.  
CENTER HIGH MOUNTED STOP LAMP (CHMSL)  
WITH CARGO LAMP  
CHMSL Bulb Location  
3. Turn the desired bulb socket a quarter turn counter-  
clockwise and remove the socket and bulb from  
housing.  
See the following steps to replace:  
Tail Lamp Removal  
1. Remove the four screws holding the housing/lens to  
the body as shown.  
3. Disconnect the wiring harness connectors from the  
bulb socket.  
4. Pull the desired bulb straight from the socket.  
CAUTION!  
Do not contaminate the bulb glass by touching it with  
your fingers or by allowing it to contract other oily  
surfaces. Shortened bulb life will result.  
8
Outside Bulbs: Cargo Lamps  
Inside Bulb: Center High Mounted Stop Lamp  
5. Reverse the procedure for installation of bulbs and  
housing.  
CHMSL Mounting Screw Locations  
Wiring Harness Connector  
370 SERVICING AND MAINTENANCE  
NOTE:  
Tire Markings  
TIRES  
P (Passenger) — Metric tire sizing is based on US design  
standards. P-Metric tires have the letter “P” molded  
into the sidewall preceding the size designation.  
Example: P215/65R15 95H.  
TIRE SAFETY INFORMATION  
Tire safety information will cover aspects of the following  
information: Tire Markings, Tire Identification Numbers,  
Tire Terminology and Definitions, Tire Pressures, and Tire  
Loading.  
European — Metric tire sizing is based on European  
design standards. Tires designed to this standard have  
the tire size molded intothesidewall beginning with the  
section width. The letter "P" is absent from this tire size  
designation.  
Example: 215/65R15 96H.  
LT (Light Truck) — Metric tire sizing is based on US  
design standards. The size designation for LT-Metric  
tires is the same as for P-Metric tires except for the  
letters “LT” that are molded into the sidewall preceding  
the size designation.  
Tire Markings  
1 — US DOT Safety Standards Code  
(TIN)  
Example: LT235/85R16.  
Temporary spare tires are designed for temporary  
emergency use only. Temporaryhigh pressure compact  
spare tires have the letter “T” or “S” molded into the  
sidewall preceding the size designation.  
2 — Size Designation  
3 — Service Description  
4 — Maximum Load  
Example: T145/80D18 103M.  
5 — Maximum Pressure  
6 — Treadwear, Traction and  
Temperature Grades  
High flotation tire sizing is based on US design stan-  
dards and it begins with the tire diameter molded into  
the sidewall.  
Example: 31x10.5 R15 LT.  
SERVICING AND MAINTENANCE 371  
TIRE SIZING CHART  
EXAMPLE:  
Example Size Designation: P215/65R15XL 95H, 215/65R15 96H, LT235/85R16C, T145/80D18 103M, 31x10.5 R15 LT  
P = Passenger car tire size based on US design standards, or  
"....blank...." = Passenger car tire based on European design standards, or  
LT = Light truck tire based on US design standards, or  
T or S = Temporary spare tire or  
31 = Overall diameter in inches (in)  
215, 235, 145 = Section width in millimeters (mm)  
65, 85, 80 = Aspect ratio in percent (%)  
Ratio of section height to section width of tire, or  
10.5 = Section width in inches (in)  
R = Construction code  
"R" means radial construction, or  
"D" means diagonal or bias construction  
15, 16, 18 = Rim diameter in inches (in)  
8
Service Description:  
95 = Load Index  
A numerical code associated with the maximum load a tire can carry  
H = Speed Symbol  
A symbol indicating the range of speeds at which a tire can carry a load corresponding to its load index under certain operating conditions  
The maximum speed corresponding to the speed symbol should only be achieved under specified operating conditions  
(i.e., tire pressure, vehicle loading, road conditions, and posted speed limits)  
 
372 SERVICING AND MAINTENANCE  
Load Identification:  
EXAMPLE:  
Absence of the following load identification symbols on the sidewall of the tire indicates a Standard Load (SL) tire:  
XL = Extra load (or reinforced) tire, or  
LL = Light load tire or  
C, D, E, F, G = Load range associated with the maximum load a tire can carry at a specified pressure  
Maximum Load – Maximum load indicates the maximum load this tire is designed to carry  
Maximum Pressure – Maximum pressure indicates the maximum permissible cold tire inflation pressure for this tire  
Tire Identification Number (TIN)  
The Tire Identification Number (TIN) may be found on one or both sides of the tire; however, the date code may only be on one side. Tires with white sidewalls will have the full TIN,  
including the date code, located on the white sidewall side of the tire. Look for the TIN on the outboard side of black sidewall tires as mounted on the vehicle. If the TIN is not found on  
the outboard side, then you will find it on the inboard side of the tire.  
EXAMPLE:  
DOT MA L9 ABCD 0301  
DOT = Department of Transportation  
This symbol certifies that the tire is in compliance with the US Department of Transportation tire safety standards and is approved for highway use  
MA = Code representing the tire manufacturing location (two digits)  
L9 = Code representing the tire size (two digits)  
ABCD = Code used by the tire manufacturer (one to four digits)  
SERVICING AND MAINTENANCE 373  
EXAMPLE:  
03 = Number representing the week in which the tire was manufactured (two digits)  
03 means the 3rd week  
01 = Number representing the year in which the tire was manufactured (two digits)  
01 means the year 2001  
Prior to July 2000, tire manufacturers were only required to have one number to represent the year in which the tire was manufactured. Example: 031 could represent the 3rd  
week of 1981 or 1991  
Tire Terminology And Definitions  
Term  
Definition  
B-pillar  
The vehicle B-pillar is the structural member of the body located behind the front door.  
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. Inflation  
pressure is measured in units of psi (pounds per square inch) or kPa (kilopascals).  
Cold Tire Inflation Pressure  
The maximum inflation pressure is the maximum permissible cold tire inflation pressure for this tire.  
The maximum inflation pressure is molded into the sidewall.  
Maximum Inflation Pressure  
Recommended Cold Tire Inflation Pressure  
Tire Placard  
The manufacturer’s recommended cold tire inflation pressure as shown on the tire placard.  
8
A label permanently attached to the vehicle describing the vehicle’s loading capacity, the original  
equipment tire sizes and the recommended cold tire inflation pressures.  
374 SERVICING AND MAINTENANCE  
This placard tells you important information about the:  
1. Number of people that can be carried in the vehicle.  
2. Total weight your vehicle can carry.  
Tire Loading And Tire Pressure  
NOTE:  
The proper cold tire inflation pressure is listed on the  
driver’s side B-pillar or the rear edge of the driver's side  
door.  
3. Tire size designed for your vehicle.  
4. Cold tire inflation pressures for the front, rear, and  
spare tires.  
Check the inflation pressure of each tire, including the  
spare tire (if equipped), at least monthly and inflate to the  
recommended pressure for your vehicle.  
Loading  
The vehicle maximum load on the tire must not exceed the  
load carrying capacity of the tire on your vehicle. You will  
not exceed thetire's load carrying capacity if you adhere to  
the loading conditions, tire size, and cold tire inflation  
pressures specified on the Tire And Loading Information  
Placard in Vehicle Loading Ú page 172.  
Example Tire Placard Location (B-pillar)  
Tire And Loading Information Placard  
NOTE:  
Under a maximum loaded vehicle condition, Gross Axle  
Weight Rating (GAWR) for the front and rear axles must  
not be exceeded.  
For further information on GAWR, vehicle loading, and  
trailer towing Ú page 172.  
Example Tire Placard Location (Door)  
To determine the maximum loading conditions of your  
vehicle, locate the statement “The combined weight of  
occupants and cargo should never exceed XXX kg or XXX  
lbs” on the Tire And Loading Information Placard. The  
combined weight of occupants, cargo/luggage and trailer  
tongue weight (if applicable) should never exceed the  
weight referenced here.  
Tire And Loading Information Placard  
SERVICING AND MAINTENANCE 375  
Metric Example For Load Limit  
Steps For Determining Correct Load Limit—  
(5) Determine the combined weight of  
luggage and cargo being loaded on the  
vehicle. That weight may not safely  
exceed the available cargo and luggage  
load capacity calculated in Step 4.  
For example, if “XXX” amount equals 635 kg and there will  
be five 68 kg passengers in your vehicle, the amount of  
available cargo and luggage load capacity is 295 kg  
(635-340 (5x68) = 295 kg) as shown in step 4.  
(1) Locate the statement “The combined  
weight of occupants and cargo should  
never exceed XXX kg or XXX lbs.” on your  
vehicle's placard.  
NOTE:  
If your vehicle will be towing a trailer, load from your  
trailer will be transferred to your vehicle. The following  
table shows examples on how to calculate total load,  
cargo/luggage, and towing capacities of your vehicle  
with varying seating configurations and number and  
size of occupants. This table is for illustration purposes  
only and may not be accurate for the seating and load  
carry capacity of your vehicle.  
(6) If your vehicle will be towing a trailer,  
load from your trailer will be transferred  
to your vehicle. Consult this manual to  
determine how this reduces the  
available cargo and luggage load  
capacity of your vehicle.  
(2) Determine the combined weight of  
the driver and passengers that will be  
riding in your vehicle.  
(3) Subtract the combined weight of the  
driver and passengers from XXX kg or  
XXX lbs.  
For the following example, the combined weight  
of occupants and cargo should never exceed  
865 lbs (392 kg).  
(4) The resulting figure equals the  
available amount of cargo and luggage  
load capacity. For example, if “XXX”  
amount equals 1400 lbs. and there will  
be five 150 lb passengers in your  
vehicle, the amount of available cargo  
and luggage load capacity is 650 lbs.  
(1400-750 (5x150) = 650 lbs.)  
8
376 SERVICING AND MAINTENANCE  
SERVICING AND MAINTENANCE 377  
Ride Comfort And Vehicle Stability  
WARNING!  
WARNING!  
Proper tire inflation contributes to a comfortable ride.  
Overinflation produces a jarring and uncomfortable ride.  
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.  
Overinflated or underinflated tires can affect vehicle  
handling and can fail suddenly, resulting in loss of  
vehicle control.  
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.  
Unequal tirepressures can cause steering problems.  
You could lose control of your vehicle.  
At least once a month:  
TIRES — GENERAL INFORMATION  
Unequal tire pressures from one side of the vehicle  
to the other can cause the vehicle to drift to the right  
or left.  
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.  
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:  
Always drive with each tire inflated to the recom-  
mended cold tire inflation pressure.  
Inspect tires for signs of tire wear or visible damage.  
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.  
Fuel Economy  
Tread Wear  
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.  
NOTE:  
Ride Comfort and Vehicle Stability  
Safety  
Unequal tire pressures from side to side may cause  
erratic and unpredictable steering response.  
WARNING!  
Unequal tire pressure from side to side may cause the  
vehicle to drift left or right.  
8
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.  
Improperly inflated tires are dangerous and can  
cause collisions.  
Fuel Economy  
Underinflated tires will increase tire rolling resistance  
resulting in higher fuel consumption.  
Underinflation increases tire flexing and can result in  
overheating and tire failure.  
Tread Wear  
Overinflation reduces a tire's abilityto cushion shock.  
Objects on the road and chuckholes can cause  
damage that result in tire failure.  
Improper cold tire inflation pressures can cause abnormal  
wear patterns and reduced tread life, resulting in the need  
for earlier tire replacement.  
(Continued)  
378 SERVICING AND MAINTENANCE  
Check tire pressures more often if subject to a wide range  
of outdoor temperatures, as tire pressures vary with  
temperature changes.  
Damaged Run Flat tires, or Run Flat tires that have  
experienced a loss of pressure should be replaced  
immediatelywith another Run Flat tireof identical sizeand  
service description (Load Index and Speed Symbol).  
Replace the tire pressure sensor as well as it is not  
designed to be reused.  
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).  
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.  
Run Flat Tires — If Equipped  
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.  
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 in a Run Flat mode  
14psi (96 kPa) condition, please replace the TPMS sensor  
as it is not designed to be reused.  
Radial Ply Tires  
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.  
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.  
Tire Repair  
NOTE:  
The TPMS Sensor must be replaced after driving the  
vehicle on a flat tire condition.  
If your tire becomes damaged, it may be repaired if it  
meets the following criteria:  
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.  
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)  
For more information Ú page 277.  
The puncture is no greater than ¼ of an inch (6 mm)  
Consult an authorized tire dealer for tire repairs and  
additional information.  
SERVICING AND MAINTENANCE 379  
Tire Spinning  
Life Of Tire  
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.  
The service life of a tire is dependent upon varying factors  
including, but not limited to:  
Driving style  
For further information Ú page 329.  
Tire pressure - Improper cold tire inflation pressures  
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  
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.  
Distance driven  
Tire Tread  
1 — Tread Wear Indicators  
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  
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.  
WARNING!  
Tread Wear Indicators  
Tread wear indicators are in the original equipment tires to  
help you in determining when your tires should be  
replaced.  
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.  
For further information Ú page 380.  
8
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.  
 
380 SERVICING AND MAINTENANCE  
Replacement Tires  
TIRE TYPES  
WARNING!  
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 using tires equivalent  
to the originals in size, quality and performance when  
replacement is needed Ú page 379. 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 tirewill be found on the original  
equipment tire sidewall.  
All Season Tires — If Equipped  
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 perfor-  
mance characteristics, resulting in changes to  
steering, handling, and braking of your vehicle. This  
can cause unpredictable 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.  
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  
For more information relating totheLoad Index and Speed  
Symbol of a tire Ú page 371.  
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.  
Summer tires provide traction in both wet and dry  
conditions, and are notintended tobe 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 vehiclewhen  
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.  
It is recommended toreplacethetwo 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.  
Failure to equip your vehicle with tires having  
adequate speed capability can result in sudden tire  
failure and loss of vehicle control.  
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.  
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.  
CAUTION!  
Replacing original tires with tires of a different size may  
result in false speedometer and odometer readings.  
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.  
 
SERVICING AND MAINTENANCE 381  
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.  
Compact Spare Tire — If Equipped  
SPARE TIRES — IF EQUIPPED  
The compact spare is for temporary emergency use only.  
You can identify if your vehicle is equipped with a compact  
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. Compact  
spare tire descriptions begin with the letter “T” or “S”  
preceding the size designation. Example: T145/80D18  
103M.  
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.  
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  
somay adverselyaffectthe safety and handling  
of your vehicle.  
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.  
T, S = Temporary Spare Tire  
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.  
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.  
For restrictions when towing with a spare tire designated  
for temporary emergency use Ú page 179.  
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 onecompact spare tireand wheel  
on the vehicle at any given time.  
Spare Tire Matching Original Equipped Tire  
And Wheel — If Equipped  
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.  
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.  
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.  
8
382 SERVICING AND MAINTENANCE  
Collapsible Spare Tire — If Equipped  
The collapsiblespare is for temporaryemergency useonly.  
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.  
Limited Use Spare — If Equipped  
WARNING!  
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  
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.  
Collapsible spare tire description  
example: 165/80-17 101P.  
equipment tire, replace (or repair) the original equipment  
tire and reinstall on the vehicle at the first opportunity.  
Since this tirehas limited tread life, the original equipment  
tire should be repaired (or replaced) and reinstalled on  
your vehicle at the first opportunity.  
WARNING!  
Full Size Spare — If Equipped  
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.  
Limited use spares are for emergency use only.  
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) theoriginal  
equipment tire and reinstall on the vehicle at the first  
opportunity.  
Installation of this limited use spare tire affects vehicle  
handling. With this tire, do not drive more than the  
speed listed on the limited use spare wheel. Keep  
inflated to the cold tire inflation pressures listed on your  
Tire And Loading Information Placard located on the  
driver’s side B-pillar or the rear edge of the driver’s side  
door. Replace (or repair) the original equipment tire at  
the first opportunity and reinstall it on your vehicle.  
Failure to do so could result in loss of vehicle control.  
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.  
SERVICING AND MAINTENANCE 383  
NOTE:  
WHEEL AND WHEEL TRIM CARE  
CAUTION!  
If you intend parking or storing your vehicle for an  
extended period after cleaning the wheels with wheel  
cleaner, drive your vehicle and apply the brakes to remove  
the water droplets from the brake components. This  
activity will remove the red rust on the brake rotors and  
prevent vehicle vibration when braking.  
All wheels and wheel trim, especially aluminum and  
chrome plated wheels, should be cleaned regularly using  
mild (neutral Ph) soap and water to maintain their luster  
and to prevent corrosion. Wash wheels with the same  
soap solution recommended for the body of the vehicle  
and remember to always wash when the surfaces are not  
hot to the touch.  
Avoid products or automatic car washes that use acidic  
solutions or strong alkaline additives or harsh brushes.  
Many aftermarket wheel cleaners and automatic car  
washes may damage the wheel's protective finish. Such  
damage is not covered by the New Vehicle Limited  
Warranty. Only car wash soap, Mopar® Wheel Cleaner  
or equivalent is recommended.  
Dark Vapor Chrome, Black Satin Chrome, or Low Gloss  
Clear Coat Wheels  
Your wheels are susceptible to deterioration caused by  
salt, sodium chloride, magnesium chloride, calcium  
chloride, etc., and other road chemicals used to melt ice  
or control dust on dirt roads. Use a soft cloth or sponge  
and mild soap to wipe away promptly. Do not use harsh  
chemicals or a stiff brush. They can damage the wheel’s  
protective coating that helps keep them from corroding  
and tarnishing.  
CAUTION!  
When cleaning extremely dirty wheels including excessive  
brake dust, care must be taken in the selection of tire and  
wheel cleaning chemicals and equipment to prevent  
damage to the wheels. Mopar® Wheel Treatment or  
Mopar® Chrome Cleaner or their equivalent is  
recommended or select a non-abrasive, non-acidic  
cleaner for aluminum or chrome wheels.  
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.  
CAUTION!  
Do not use scouring pads, steel wool, a bristle brush,  
metal polishes or oven cleaner. These products may  
damage the wheel's protective finish. Such damage is  
not covered by the New Vehicle Limited Warranty. Only  
car wash soap, Mopar® Wheel Cleaner or equivalent is  
recommended.  
8
384 SERVICING 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 for the recommended tire size, axle and snow traction device:  
Snow Traction Device  
(Maximum Projection BeyondTire Profile  
Or Equivalent)  
4x2 (2WD)  
Trim Level  
Axle  
Rear  
Tire/Wheel Size  
HFE  
Tradesman  
Bighorn Lonestar  
Laramie  
275/65R18  
275/55R20  
S Class  
S Class  
Longhorn  
Sport  
Rear  
275/55R20  
Limited  
REBEL  
Not Chainable