Get Wheels and tires -> Changing a wheel Guide for Mercedes G Class SUV Fourth Generation (2019-2024)

Maximum load on one tire: maximum load on one

tire. This is calculated by dividing the maximum

axle load of one axle by two.

PSI (pounds per square inch): standard unit of

measurement for tire pressure.

Aspect ratio: ratio between tire height and tire

width in percent.

Tire pressure: the pressure inside the tire which

applies an outward force to every square inch of

the tire. The tire pressure is specied in pounds

per square inch (psi), in kilopascals (kPa) or in bar.

The tire pressure should only be corrected when

the tires are cold.

Cold tire pressure: the tires are cold when the

vehicle has been parked for at least 3 hours with-

out direct sunlight on the tires or the vehicle has

been driven for less than 1 mile (1.6 km).

Tire contact surface: the part of the tire that

comes into contact with the road.

Tire bead: the purpose of the tire bead is to

ensure that the tire sits securely on the wheel rim.

There are several wire cores in the tire bead to

prevent the tire from changing length on the

wheel rim.

Side wall: the part of the tire between the tread

and the tire bead.

Weight of optional equipment: the combined

weight of the optional equipment weighing more

than the replaced standard parts and more than

5 lbs (2.3 kg). This optional equipment, such as

high-performance brakes, level control system, a

roof luggage rack or high-performance batteries,

is not included in the curb weight and the weight

of the accessories.

TIN (Tire Identication Number): a unique identi-

cation number which can be used by a tire manu-

facturer to identify tires, for example, in a product

recall, and thus identify the purchasers. The TIN is

made up of the manufacturer's identity code, tire

size, tire type code and the manufacturing date.

Load-bearing index: the load-bearing index is a

code that contains the maximum load-bearing

capacity of a tire.

Traction: traction is the grip resulting from friction

between the tires and the road surface.

Wear indicator: narrow bars (tread wear bars) that

are distributed over the tire contact surface. If the

tire tread is level with the bars, the wear limit of

1/16 in (1.6 mm) has been reached.

Distribution of vehicle occupants: distribution of

vehicle occupants over designated seat positions

in a vehicle.

Maximum permissible payload weight: nominal

load and luggage load plus 150 lb (68 kg) multi-

plied by the number of seats in the vehicle.

Changing a wheel

Notes on selecting, installing and replacing tires

Mercedes-AMG vehicles: observe the notes in the

Supplement. You could otherwise fail to recognize

dangers.

You can ask for information regarding permitted

wheel/tire combination at an authorized

Mercedes-Benz Service Center.

WARNING Risk of accident due to incor-

rect wheel and tire dimensions

If wheels and tires of the wrong size are instal-

led, the service brakes or components in the

Wheels and tires

365

brake system and in the wheel suspension

may be damaged.

Always replace wheels and tires with

ones that fulll the specications of the

original part.

For wheels, pay attention to the following:

Designation

Type

For tires, pay attention to the following:

Designation

Manufacturer

Type

WARNING Risk of injury through exceed-

ing the specied tire load-bearing capa-

city or the permissible speed rating

Exceeding the specied tire load rating or the

permissible speed rating may lead to tire dam-

age and to the tires bursting.

Therefore, only use tire types and sizes

approved for your vehicle model.

Observe the tire load rating and speed

rating required for your vehicle.

NOTE Vehicle and tire damage caused by

non-approved tire types and sizes

For safety reasons, only use tires, wheels and

accessories which have been specially

approved by Mercedes-Benz for your vehicle.

These tires are specially adapted to the active

safety systems, such as ABS, ESP

and

4MATIC, and marked as follows:

MO = Mercedes-Benz Original

MOE = Mercedes-Benz Original Extended

(run-at tires only for certain wheels)

MO1 = Mercedes-Benz Original (only cer-

tain AMG tires)

Otherwise, certain properties, such as han-

dling characteristics, vehicle noise emissions,

consumption, etc. could be adversely aec-

ted. Furthermore, other tire sizes could result

in the tires rubbing against the body and axle

components when loaded. This could result in

damage to the tire or the vehicle.

Only use tires, wheels and accessories that

have been checked and recommended by

Mercedes-Benz.

NOTE Risk to driving safety from retrea-

ded tires

Retreaded tires are neither tested nor recom-

mended by Mercedes-Benz, since previous

damage cannot always be detected on retrea-

ded tires.

For this reason driving safety cannot be guar-

anteed.

Do not use used tires if you have no

information about their previous usage.

NOTE Possible wheel and tire damage

when driving over obstacles

Large wheels have a smaller section width. As

the section width decreases, the risk of

366

Wheels and tires

wheels and tires being damaged when driving

over obstacles increases.

Avoid obstacles or drive especially care-

fully.

Reduce your speed when driving over

curbs, speed bumps, manhole covers

and potholes.

Avoid particularly high curbs.

NOTE Damage to electronic component

parts due to the use of tire-installing tools

Vehicles with tire pressure monitoring sys-

tem: There are electronic component parts in

the wheel.

If tire-installing tools are positioned in the area

of the valve, the electronic components could

be damaged.

Tire-installing tools should not be applied

in the area of the valve.

Always have tires change at a qualied

specialist workshop.

NOTE Damage to summer tires at low

ambient temperatures

At low ambient temperatures, tears could form

when driving with summer tires, causing per-

manent damage to the tires.

At temperatures below 45 °F (7 °C) use

i M+S tires.

Accessory parts which are not approved for your

vehicle by Mercedes-Benz, or which are not used

correctly, can impair the operating safety.

Before purchasing and using non-approved acces-

sories, visit a qualied specialist workshop and

inquire about the following:

Suitability

Legal stipulations

Factory recommendations

WARNING Risk of accident with high per-

formance tires

The special tire tread in combination with the

optimized tire compound means that the risk

of skidding and hydroplaning on wet roads is

increased.

In addition, the tire grip is greatly reduced at a

low outside temperature and tire running tem-

perature.

Switch on the ESP

and adapt your driv-

ing style accordingly.

Use i M+S tires at outside tempera-

tures of less than 50 °F (10 °C).

Only use the tires for their intended pur-

pose.

Observe the following when selecting, installing

and replacing tires:

Only use tires and wheels of the same type

(summer tires, winter tires, MOExtended tires)

and the same make.

Only install wheels of the same size on one

axle (le and right).

It is only permissible to install a dierent

wheel size in the event of a at tire in order to

drive to the specialist workshop.

Wheels and tires

367

Only install tires of the correct size onto the

wheels.

Vehicles with a tire pressure monitoring sys-

tem: all installed wheels must be equipped

with functioning sensors for the tire pressure

monitoring system.

At temperatures below 45°F (7°C) use winter

tires or all-season tires marked M+S for all

wheels.

Winter tires bearing the i snowake sym-

bol in addition to the M+S marking provide the

best possible grip in wintry road conditions.

For M+S tires, only use tires with the same

tread.

Observe the maximum permissible speed for

the M+S tires installed.

If this is below the vehicle's maximum speed,

this must be indicated by an appropriate label

in the driver's eld of vision.

Break in new tires at moderate speeds for the

rst 60 miles (100 km).

Replace the tires aer six years at the latest,

regardless of wear.

For more information on wheels and tires, contact

a qualied specialist workshop.

Be sure to also observe the following further rela-

ted subjects:

Notes on tire pressure (/ page 348)

Tire and loading information placard

(/ page 353)

Tire size designation, load-bearing capacity,

speed rating and load index (/ page 361)

Tire pressure table (/ page 350)

Notes on the emergency spare wheel

(/ page 375)

Notes on rotating wheels

WARNING Risk of injury through dierent

wheel sizes

Rotating the front and rear wheels can

severely impair the driving characteristics.

The wheel brakes or suspension components

may also be damaged.

Rotate front and rear wheels only if the

wheels and tires are of the same dimen-

sions.

Observe the instructions and safety notes on

"Changing a wheel" (/ page 365)

The wear patterns on the front and rear wheels

dier:

Front wheels wear more on the tire shoulder

Rear wheels wear more in the center of the

tire

Do not drive with tires that have too little tread

depth. This signicantly reduces traction on wet

roads (hydroplaning).

On vehicles that have the same size front and rear

wheels, rotate the wheels according to the inter-

vals in the tire manufacturer's warranty book in

your vehicle documents. If this is not available,

rotate the tires every 3,000 to 6,000 miles

(5,000 to 10,000 km), depending on the wear.

Ensure that the direction of rotation is main-

tained.

368

Wheels and tires

Notes on storing wheels

When storing wheels, observe the following notes:

Aer removing wheels, store them in a cool,

dry and preferably dark place.

Protect the tires from contact with oil, grease

or fuel.

Vehicle tool kit overview

The vehicle tool kit contains:

Vehicle tool bag with:

Pump lever for jack

Wheel wrench with T-piece

Screwdriver (inserted in a pump lever)

Dismantling tool for roof luggage rack

(inserted in a pump lever)

Jack with adapter

The vehicle tool kit is located under the rear

bench seat (/ page 95).

Vehicle tool bag

Jack

Preparing the vehicle for a wheel change

Requirements:

The required tire-change tool kit is available. If

your vehicle is not equipped with the tire-

change tool kit, consult a qualied specialist

workshop to nd out about suitable tools.

The vehicle is not on a slope.

The vehicle is on solid, non-slippery and level

ground.

Apply the electric parking brake manually.

Move the front wheels to the straight-ahead

position.

Shi the transmission to position j.

Switch o the vehicle.

Make sure that the vehicle cannot be started.

Place chocks or other suitable items under the

front and rear of the wheel that is diagonally

opposite the wheel you wish to change.

Remove the hub caps if necessary

(/ page 370).

Raise the vehicle (/ page 370).

Wheels and tires

369

Removing and installing the wheel trim/hub caps

Requirements

The vehicle is prepared for a wheel change

(/ page 369).

Plastic hub cap

To remove:

Turn the center cover of the hub cap counter-

clockwise and remove the hub cap.

To install:

Make sure that the center cover of the hub

cap is turned counter-clockwise.

Position the hub cap and turn the center cover

clockwise until the hub cap engages physically

and audibly.

Aluminum hub cap

To remove:

Position socket 2 from the tire-change tool

kit on hub cap

Position wheel wrench 3 on socket 2.

Using wheel wrench 3, turn hub cap 1

counter-clockwise and remove it.

To install:

Follow the instructions above in reverse order.

Specied tightening torque: 20 lb- (27 Nm).

Raising the vehicle when changing a wheel

Requirements

There are no persons in the vehicle.

The vehicle has been prepared for a wheel

change (/ page 369).

The hub caps have been removed

(/ page 370).

Installing the jack

370

Wheels and tires

Assemble pump lever 1.

Place pump lever 1 with the recess on lower-

ing screw

2 on the jack.

Turn pump lever 1 clockwise as far as it will

go.

Lowering screw

2 is closed.

Adapter

To raise the vehicle at the front: adapter 3 must

be secured on the jack.

To raise the vehicle at the rear: remove adapter

3 from the jack.

Important notes on using the jack:

Use only the vehicle-specic jack that has

been tested and approved by Mercedes-Benz

to raise the vehicle.

The jack is only designed for raising and hold-

ing the vehicle for a short time while a wheel

is being changed and not for maintenance

work under the vehicle.

The jack must be placed on a rm, at and

non-slip surface. If necessary, use a large, at,

load-bearing, non-slip underlay.

Position the jack only at the jack support

point.

Rules of conduct when the vehicle is raised:

Never place your hands or feet under the vehi-

cle.

Never lie under the vehicle.

Do not start the vehicle and do not release the

electric parking brake.

Do not open or close any doors or the rear-

end door.

Using the wheel bolt, loosen the wheel bolts

on the wheel you wish to change by about one

full turn. Do not unscrew the screws com-

pletely.

WARNING Risk of injury from incorrect

positioning of the jack

If you do not position the jack correctly at the

appropriate jacking point of the vehicle, the

jack could tip with the vehicle raised.

Only position the jack at the appropriate

jacking point of the vehicle. The base of

the jack must be positioned vertically

under the jacking point of the vehicle.

Wheels and tires

371

NOTE Damage to the vehicle due to the

jack

If you do not position the jack at the jack sup-

port points provided for this purpose, you

could damage your vehicle.

Only position the jack at the jack sup-

port points provided for this purpose.

Raising the vehicle at the front

Make sure that the adapter is secured on the

jack.

Position jack 4 on the comfort bushing on

transverse link

Raise the vehicle by pumping until the tire is

no more than 1.2 in (3 cm) o the ground.

Loosen and remove the wheel (/ page 373).

Raising the vehicle at the rear

Pull out the adapter from the jack.

Position jack 4 at the jack support point of

axle carrier tube

Keep pumping until axle carrier tube 6 sits

securely in the jack support point and the

base of the jack lies evenly on the ground.

372

Wheels and tires

Raise the vehicle by pumping until the tire is

no more than 1.2 in (3 cm) o the ground.

Loosen and remove the wheel (/ page 373).

Removing a wheel

Requirements

The vehicle is raised (/ page 370).

When changing a wheel, avoid applying any force

to the brake disks, as this could impair the level of

comfort when braking.

NOTE Damage to threading from dirt on

wheel bolts

Do not place wheel bolts in sand or on a

dirty surface.

Unscrew the wheel bolts.

Remove the wheel.

Install the new wheel (/ page 373).

Installing a new wheel

Requirements

The wheel is removed (/ page 373).

WARNING Risk of accident from losing a

wheel

Oiled, greased or damaged wheel bolt/wheel

nut threads or wheel hub/wheel mounting

bolt threads can cause the wheel bolts/wheel

nuts to come loose.

Never oil or grease the threads.

In the event of damage to the threads,

contact a qualied specialist workshop

immediately.

Have the damaged wheel bolts or dam-

aged hub threads replaced.

Do not continue driving.

Observe the information on the choice of tires

(/ page 365).

For tires with a specied direction of rotation, an

arrow on the side wall of the tire indicates the cor-

rect direction of rotation. Observe the direction of

rotation when installing.

Place the wheel to be installed on the wheel

hub and push it on.

WARNING Risk of injury from tightening

wheel bolts and nuts

If you tighten the wheel bolts or wheel nuts

when the vehicle is raised, the jack could tip.

Only tighten wheel bolts or wheel nuts

when the vehicle is on the ground.

For safety reasons, only use wheel bolts which

have been approved by Mercedes-Benz and

for the wheel in question.

NOTE Damage to paintwork of the wheel

rim when screwing in the rst wheel bolt

If the wheel has too much play when screwing

in the rst wheel bolt, the wheel rim paint can

be damaged.

Wheels and tires

373

Press the wheel rmly against the wheel

hub when screwing in the rst wheel

bolt.

Tighten the wheel bolts evenly in a diagonal

pattern in the order indicated until they are

nger-tight.

Lower the vehicle (/ page 374).

Lowering the vehicle aer a wheel change

Requirements

The new wheel has been installed

(/ page 373).

To lower the vehicle: place the ratchet onto

the hexagon nut of the jack so that the letters

"AB" are visible and turn counter-clockwise.

Tighten the wheel bolts evenly in a diagonal

pattern in the order indicated 1 to 5 with

an initial maximum force of 59 lb- (80 Nm).

Tighten the wheel bolts evenly in a diagonal

pattern in the order indicated 1 to 5 with

the specied tightening torque of 111 lb-

(150 Nm).

WARNING Risk of accident due to incor-

rect tightening torque

The wheels could come loose if the wheel

bolts or wheel nuts are not tightened to the

prescribed torque.

Ensure that the wheel bolts or wheel

nuts are tightened to the prescribed

tightening torque.

If you are not sure, do not move the vehi-

cle. Contact a qualied specialist work-

shop and have the tightening torque

checked immediately.

Check the tire pressure of the newly installed

wheel and adjust it if necessary.

The following does not apply if the new wheel

is an emergency spare wheel.

Vehicles with a tire pressure monitoring sys-

tem: restart the tire pressure monitoring sys-

tem (/ page 353).

374

Wheels and tires

Wheels and tires -> Changing a wheel for Your Mercedes G Class SUV Fourth Generation (2019-2024)

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