tire size JEEP WRANGLER 2013 JK / 3.G Owners Manual

Seat Belt Pretensioners
The seat belts for both front seating positions are
equipped with pretensioning devices that are designed to
remove slack from the seat belt in the event of a collision.
These devices may improve the performance of the seat
belt by assuring that the belt is tight about the occupant
early in a collision. Pretensioners work for all size occu-
pants, including those in child restraints.
NOTE:These devices are not a substitute for proper seat
belt placement by the occupant. The seat belt still must be
worn snugly and positioned properly.
The pretensioners are triggered by the Occupant Re-
straint Controller (ORC). Like the air bags, the preten-
sioners are single use items. A deployed pretensioner or
a deployed air bag must be replaced immediately.
Enhanced Seat Belt Use Reminder System
(BeltAlert®)
BeltAlert® is a feature intended to remind the driver and
front passenger (if equipped with front passenger
BeltAlert®) to fasten their seat belts. The feature is active
whenever the ignition is on. If the driver or front seat
passenger is unbelted, the Seat Belt Reminder Light will
turn on and remain on until both front seat belts are
fastened.
The BeltAlert® warning sequence begins after the vehicle
speed is over 5 mph (8 km/h), by blinking the Seat Belt
Reminder Light and sounding an intermittent chime.
Once the sequence starts, it will continue for the entire
duration or until the respective seatbelts are fastened.
After the sequence completes, the Seat Belt Reminder
Light remains illuminated until the respective seat belts
are fastened. The driver should instruct all other occu-
pants to fasten their seat belts. If a front seat belt is
60 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE

SOFT TOP — TWO-DOOR MODELS
Please visit the owners section of Jeep.com for instruc-
tional videos.
CAUTION!
The soft top is not designed to carry any additional
loads such as roof racks, spare tires, building, hunting,
or camping supplies, and/or luggage, etc. Also, it was
not designed as a structural member of the vehicle and,
thus, cannot properly carry any additional loads other
than environmental (rain, snow, etc.).
If the temperature is below 72°F (24°C) and/or the top
has been folded down for a period of time, the top will
appear to have shrunk when you raise it, making it
difficult to put up. This is caused by a natural contraction
of the vinyl coating on the fabric top.Place the vehicle in a warm area. Pull steadily on the top
fabric. The vinyl will stretch back to its original size and
the top can then be installed.
If the temperature is 41°F
(5°C) or below, do not attempt to put the top down or
roll the rear or side curtains.
CAUTION!
• Do not run a fabric top through an automatic car
wash. Window scratches and wax build up may
result.
• Do not lower the top when the temperature is
below 41°F (5°C). Damage to the top may result.
• Do not move your vehicle until the top has been
either fully attached to the windshield frame, or
fully lowered.
• Do not lower the top with the windows installed.
Window and top damage may occur.
(Continued)
3
UNDERSTANDING THE FEATURES OF YOUR VEHICLE 225

SOFT TOP — FOUR-DOOR MODELS
Please visit the owner’s section of Jeep.com for instruc-
tional videos.
CAUTION!
The soft top is not designed to carry any additional
loads such as roof racks, spare tires, building, hunting,
or camping supplies, and/or luggage, etc. Also, it was
not designed as a structural member of the vehicle, and
thus cannot properly carry any additional loads other
than environmental (rain, snow, etc.).
If the temperature is below 72°F (24°C) and/or the top
has been folded down for a period of time, the top will
appear to have shrunk when you raise it, making it
difficult to put up. This is caused by a natural contraction
of the vinyl coating on the fabric top.Place the vehicle in a warm area. Pull steadily on the top
fabric. The vinyl will stretch back to its original size and
the top can then be snapped into place.
If the tempera-
ture is 41°F (5°C) or below, do not attempt to put the top
down or roll the rear or side curtains.
CAUTION!
• Do not run a fabric top through an automatic car
wash. Window scratches and wax buildup may
result.
• Do not lower the top when the temperature is
below 41°F (5°C). Damage to the top may result.
• Do not lower the top when the windows are dirty.
Grit may scratch the window.
• Do not move your vehicle until the top has been
either fully attached to the windshield frame, or
fully lowered.
(Continued)
3
UNDERSTANDING THE FEATURES OF YOUR VEHICLE 253

19. Cruise IndicatorThis indicator shows when the electronic speed
control system is turned on.
20. 4WD Indicator Light — If Equipped
This light alerts the driver that the vehicle is in
the four-wheel drive mode, and the front and
rear driveshafts are mechanically locked to-
gether forcing the front and rear wheels to
rotate at the same speed.
21. Odometer / Trip Odometer / ECO (Fuel Saver Indi-
cator) Button
Press this button to change the display from odometer to
either of the two trip odometer settings or the “ECO”
display. Trip A or Trip B will appear when in the trip
odometer mode. Press and hold the button for two
seconds to reset the trip odometer to 0 miles or kilome-
ters. The odometer must be in trip mode to reset. 22. Shift Lever Indicator
The Shift Lever Indicator is self-contained within the
instrument cluster. It displays the gear position of the
automatic transmission.
23. Tire Pressure Monitoring Telltale Light
Each tire, including the spare (if provided),
should be checked monthly when cold and in-
flated to the inflation pressure recommended by
the vehicle manufacturer on the vehicle placard
or tire inflation pressure label. (If your vehicle has tires of
a different size than the size indicated on the vehicle
placard or tire inflation pressure label, you should deter-
mine the proper tire inflation pressure for those tires.)
As an added safety feature, your vehicle has been
equipped with a Tire Pressure Monitoring System (TPMS)
that illuminates a low tire pressure telltale when one or
more of your tires is significantly under-inflated. Accord-
ingly, when the low tire pressure telltale illuminates, you
310 UNDERSTANDING YOUR INSTRUMENT PANEL

CAUTION!
The TPMS has been optimized for the original
equipment tires and wheels. TPMS pressures and
warning have been established for the tire size
equipped on your vehicle. Undesirable system opera-
tion or sensor damage may result when using re-
placement equipment that is not of the same size,
type, and/or style. Aftermarket wheels can cause
sensor damage. Do not use tire sealant from a can or
balance beads if your vehicle is equipped with a
TPMS, as damage to the sensors may result.
24. Odometer / Trip Odometer Display Area
The odometer display shows the total distance the ve-
hicle has been driven. The trip odometer shows indi-
vidual trip mileage. Refer to “Odometer / Trip Odometer
/ ECO (Fuel Saver Indicator) Button” for additional
information. U.S. Federal regulations require that upon transfer of
vehicle ownership, the seller certify to the purchaser the
correct mileage that the vehicle has been driven. If your
odometer needs to be repaired or serviced, the repair
technician should leave the odometer reading the same
as it was before the repair or service. If s/he cannot do so,
then the odometer must be set at zero, and a sticker must
be placed in the door jamb stating what the mileage was
before the repair or service. It is a good idea for you to
make a record of the odometer reading before the repair/
service, so that you can be sure that it is properly reset, or
that the door jamb sticker is accurate if the odometer
must be reset at zero.
312 UNDERSTANDING YOUR INSTRUMENT PANEL

▫Compact Spare Tire – If Equipped .........493
▫ Full Size Spare – If Equipped .............494
▫ Limited-Use Spare – If Equipped ..........494
▫ Tire Spinning ....................... .495
▫ Tread Wear Indicators ..................496
▫ Life Of Tire ........................ .496
▫ Replacement Tires .....................497
 TIRE CHAINS (TRACTION DEVICES) .......499
 TIRE ROTATION RECOMMENDATIONS .....500
 TIRE PRESSURE MONITOR SYSTEM (TPMS) . .501
▫ Premium and Base TPM System ...........504
▫ Premium System – If Equipped ............508
▫ General Information ...................512 
FUEL REQUIREMENTS ..................513
▫ 3.6L Engine ......................... .513
▫ Reformulated Gasoline .................513
▫ Gasoline/Oxygenate Blends ..............514
▫ E-85 Usage In Non-Flex Fuel Vehicles .......514
▫ MMT In Gasoline .....................515
▫ Materials Added To Fuel ................515
▫ Fuel System Cautions ...................516
▫ Carbon Monoxide Warnings .............517
 ADDING FUEL ....................... .517
▫ Fuel Filler Cap (Gas Cap) ...............517
▫ Loose Fuel Filler Cap Message ............519
412 STARTING AND OPERATING

In the event that additional traction is required, the
transfer case 4H and 4L positions can be used to lock the
front and rear driveshafts together, forcing the front and
rear wheels to rotate at the same speed. This is accom-
plished by simply moving the shift lever to one of these
positions. The 4H and 4L positions are intended for loose,
slippery road surfaces only and not intended for normal
driving. Driving in the 4H and 4L positions on hard-
surfaced roads will cause increased tire wear and damage
to the driveline components.
The “4WD Indicator Light” (located in the instrument
cluster) alerts the driver that the vehicle is in four-wheel
drive, and the front and rear driveshafts are locked
together. The light will illuminate when the transfer case
is shifted into the 4H position.NOTE:
Do not attempt to shift when only the front or
rear wheels are spinning. The transfer case is not
equipped with a synchronizer, and the front and rear
driveshaft speeds must be equal for a shift to take place.
Shifting while only the front or rear wheels are spinning
can cause damage to the transfer case.
When operating your vehicle in 4L, the engine speed will
be approximately three times (four times for Rubicon
models) that of the 2H or 4H positions at a given road
speed. Take care not to overspeed the engine.
Proper operation of four-wheel drive vehicles depends
on tires of equal size, type, and circumference on each
wheel. Any difference will adversely affect shifting and
cause damage to the transfer case.
Because four-wheel drive provides improved traction,
there is a tendency to exceed safe turning and stopping
speeds. Do not go faster than road conditions permit.
434 STARTING AND OPERATING

CAUTION!
If the “Brake Warning Light” remains on with the
parking brake released, a brake system malfunction
is indicated. Have the brake system serviced by an
authorized dealer immediately.
ANTI-LOCK BRAKE SYSTEM
The Anti-Lock Brake System (ABS) is designed to aid the
driver in maintaining vehicle control under adverse
braking conditions. The system operates with a separate
computer to modulate hydraulic pressure to prevent
wheel lock-up and help avoid skidding on slippery
surfaces.
All vehicle wheels and tires must be the same size and
type, and tires must be properly inflated to produce
accurate signals for the computer.
WARNING!
Significant over or under-inflation of tires, or mixing
sizes of tires or wheels on the vehicle can lead to loss
of braking effectiveness.
The Anti-Lock Brake System conducts a low speed self-
test at about 12 mph (20 km/h). If for any reason your
foot is on the brake when the vehicle reaches 12 mph
(20 km/h), this check will be delayed until 25 mph
(40 km/h).
The Anti-Lock Brake System pump motor runs during
the self-test, and during an ABS stop, to provide the
regulated hydraulic pressure. The motor pump makes a
low humming noise during operation; this is normal.
5
STARTING AND OPERATING 459

TIRE SAFETY INFORMATION
Tire MarkingsNOTE:
•P (Passenger) - Metric tire sizing is based on U.S.
design standards. P-Metric tires have the letter “P”
molded into the sidewall preceding the size designa-
tion. Example: P215/65R15 95H.
• European-Metric tire sizing is based on European
design standards. Tires designed to this standard have
the tire size molded into the sidewall beginning with
the section width. The letter Pis absent from this tire
size designation. Example: 215/65R15 96H.
• LT (Light Truck) - Metric tire sizing is based on U.S.
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 preced-
ing the size designation. Example: LT235/85R16.
1 — U.S. DOT Safety Standards
Code (TIN) 4 — Maximum Load
2 — Size Designation 5 — Maximum Pressure
3 — Service Description 6 — Treadwear, Traction and
Temperature Grades
476 STARTING AND OPERATING

•Temporary spare tires are spares designed for tempo-
rary emergency use only. Temporary high pressure
compact spare tires have the letter “T” or “S” molded
into the sidewall preceding the size designation. Ex-
ample: T145/80D18 103M. •
High flotation tire sizing is based on U.S. design
standards and it begins with the tire diameter molded
into the sidewall. Example: 31x10.5 R15 LT.
Tire Sizing Chart
EXAMPLE:
Size Designation: P= Passenger car tire size based on U.S. design standards
....blank.... = Passenger car tire based on European design standards
LT = Light truck tire based on U.S. design standards
TorS= Temporary spare tire
31 = Overall diameter in inches (in)
215 = Section width in millimeters (mm)
65 = Aspect ratio in percent (%)
— Ratio of section height to section width of tire
10.5 = Section width in inches (in)
5
STARTING AND OPERATING 477