wheel size JEEP WRANGLER UNLIMITED 2020 Owner handbook (in English)

SERVICING AND MAINTENANCE
240
(Continued)
Dark Vapor Chrome, Black Satin Chrome, or
Low Gloss Clear Coat WheelsTire Chains And Traction Devices
Use of traction devices require sufficient
tire-to-body clearance. Follow these recom-
mendations to guard against damage.
the tire, as recommended by the traction
device manufacturer.
Install on rear tires only. 

All OE equipped tire and wheel sizes are

chainable with an Autosock traction
device. See Autosock.com for the recom -
mended part or model number for your OE
equipped tire size.
permitted with the use of 245/75R17
tires on size 17 x 7.5 ET44.45 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 USING
MILD SOAP AND WATER WITH A SOFT
CLOTH. Used on a regular basis; this is all
that is required to maintain this finish.
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 condi -
tion are used. Broken devices can cause
serious damage. Stop the vehicle imme-
diately if noise occurs that could indi -
cate device breakage. Remove the
damaged parts of the device before
further use.
Install device as tightly as possible and
then retighten after driving about ½ mile
(0.8 km). Autosock traction devices do
not require retightening.
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.
2020_JEEP_JL_WRANGLER_UG_RHD_UK.book Page 240 
The use of S-class snow chains is 
Traction device must be of proper size for

241
Tire Rotation Recommendations
The tires on the front and rear of your vehicle
operate at different loads and perform
different steering, handling, and braking
functions. For these reasons, they wear at
unequal rates.
These effects can be reduced by timely rota-
tion of tires. The benefits of rotation are
especially worthwhile with aggressive tread
designs such as those on On/Off Road 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 maintenance intervals. The reasons
for any rapid or unusual wear should be
corrected prior to rotation being performed.
The suggested rotation method is the “rear
-
ward-cross” shown in the following diagram.
Tire Rotation (Rearward Cross)
STORING THE VEHICLE

Observe the traction device manufacturer’s
instructions 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.
CAUTION! (Continued)
CAUTION!
Proper operation of four-wheel drive
vehicles depends on tires of equal size,
type and circumference on each wheel.
Any difference in tire size can cause
damage to the transfer case. Tire rotation
schedule should be followed to balance
tire wear.
WARNING!
Take care to avoid the radiator cooling
fan whenever the hood is raised. It can
start anytime the ignition switch is ON.
You can be injured by moving fan blades.
Remove any metal jewelry such as rings,
watch bands and bracelets that could
make an inadvertent electrical contact.
You could be seriously injured.
Vehicles with the Stop/Start system will
be equipped with two batteries. Both the
main and the supplemental batteries
must be disconnected to completely
de-energize the 12 Volt electrical
system.
Serious injury or death could result if you
do not disconnect both batteries. To
learn how to properly disconnect, see
your authorized dealer.
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247
TECHNICAL SPECIFICATIONS
VEHICLE IDENTIFICATION
NUMBER

The Vehicle Identification Number (VIN) is
found on the left front corner of the A pillar,
visible from outside of the vehicle through the
windshield. This number also appears under-
body, on the right side of the frame rail near the
center of the vehicle, as well as on the Automo-
bile Information Disclosure Label affixed to a
window on your vehicle. Save this label for a
convenient record of your vehicle identification
number and optional equipment.

The VIN is also stamped on either right or left
hand side of the engine block.
Vehicle Identification Number
NOTE:
It is illegal to remove or alter the VIN plate.
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
high quality 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. Spare Tire Torque Specifications
**Use only authorized dealer recommended
lug nuts/bolts and clean or remove any dirt or
oil before tightening.
Spare tire torque is for the spare tire carrier
located on the tailgate.
Lug Nut/Bolt
Torque
**Lug Nut/
Bolt SizeLug Nut/Bolt
Socket Size
130 Ft-Lbs
(176 N·m) M14 x 1.50 22 mm
Lug Nut/Bolt
Torque**Lug Nut/
Bolt SizeLug Nut/Bolt
Socket Size
59 Ft-Lbs
(80 N·m) M14 x 1.50 22 mm
2020_JEEP_JL_WRANGLER_UG_RHD_UK.book Page 247

TECHNICAL SPECIFICATIONS
248
Tighten the lug nuts/bolts in a star pattern
until each nut/bolt has been tightened twice.
Ensure that the socket is fully engaged on
the lug nut/bolt (do not insert it halfway).Torque Patterns
After 25 miles (40 km), check the lug nut/
bolt torque to be sure that all the lug nuts/
bolts are properly seated against the wheel.WHEELS
Refer to the tire placard label located on the
door sill of the vehicle or to the Registration
Document for the tire size and pressure.
Refer to “Tires” in “Servicing And Mainte -
nance” chapter for further information.
WEIGHTS
For further information refer to “Vehicle
Loading” in the “Starting And Operating”
chapter.
FUEL REQUIREMENTS —
GASOLINE ENGINE
2.0L Engine
This engine is designed to meet all emission
regulations, and provide satisfactory fuel
economy and performance when using
high-quality unleaded gasoline with a recom -
mended RON of 95.
While operating on gasoline with the
required octane number, hearing a light
knocking sound from the engine is not a
cause for concern. However, if the engine is
heard making a heavy knocking sound, see
your dealer immediately. Use of gasoline
with a lower than recommended octane
number can cause engine failure and may
void or not be covered by the New Vehicle
Limited Warranty.
Poor quality gasoline can cause problems
such as hard starting, stalling, and hesita -
tions. If you experience these symptoms, try
another brand of gasoline before considering
service for the vehicle.
WARNING!
To avoid the risk of forcing the vehicle off
the jack, do not tighten the lug nuts/bolts
fully until the vehicle has been lowered.
Failure to follow this warning may result in
personal injury.
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