Online Owner's Manual

Date of printing:

05/16/2012

Online Owner's Manual [In depth | Safety | Tyres and wheels]

Owner's Manual version: H 09/10

Note: The online Owner's Manual is the latest version available. Deviations between this manual and items specific to your vehicle may occur since Mercedes-Benz constantly adapts its vehicles to the latest technology and modifies design and equipment. Please note that this online Owner's Manual does not under any circumstances replace the printed Owner's Manual which is supplied with the vehicle.

Tyres and wheels

Operating safety and roadworthiness

Tyres are particularly important for the operating safety and roadworthiness of the vehicle. Therefore, you should check the tyre pressure, tyre tread and tyre condition on a regular basis.

A specialist tyre store, a qualified specialist workshop or any Mercedes-Benz Service Centre will be able to give you further information about:

  • recommended tyre brands

  • tyre load-bearing capacity (LI Load Index)

  • speed index (maximum permissible tyre speed)

  • tyre age

  • causes and effects of tyre wear

  • measures to be taken in the event of tyre damage

  • tyre types for specific regions, areas of operation or conditions of vehicle use

  • tyre modification options

Modifications to the brake system or wheels are not permissible, nor is the use of spacer plates or brake dust shields. Any such modifications will invalidate the vehicle's general operating permit.

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WARNING

For safety reasons, Mercedes-Benz recommends that you only use tyres and wheels which have been specially approved for your vehicle by Mercedes-Benz. These tyres and wheels are specially adapted for the vehicle's handling characteristics, comfort and wear, as well as for use with the control systems, such as ABS or ESP®. If you use other tyres and wheels, Mercedes-Benz cannot accept any responsibility for damage which may occur as a result. You can obtain information about tyres and wheels from any Mercedes-Benz Service Centre.

If you fit tyres and wheels other than those tested and recommended for Mercedes-Benz, characteristics such as handling, noise levels, fuel consumption and wear, etc. may be adversely affected. In addition, when driving with a load, dimensional variations and different tyre deformation characteristics could cause the tyres to make contact with the bodywork and axle components. This could result in damage to the tyres or the vehicle.

Run in new tyres at moderate speeds for the first 100 km.

You can find further information on winter tyres more and snow chains more in the "Operation" section.

The wheel rim size and the permissible combinations of tyres and wheels can be found in the tyre pressure table in the "Technical data" section more.

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WARNING

Loose wheel nuts or bolts could cause you to lose a wheel while the vehicle is in motion. You could lose control of the vehicle as a result, cause an accident and injure yourself or others.

Therefore, you should tighten the wheel nuts or wheel bolts regularly, at least once a year, to the specified tightening torque.

You can find further information about the tightening torque for wheel nuts in the "Technical data" section more.

Tyre pressure

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WARNING

Always observe the specified tyre pressures for your vehicle.

The tyre temperature and pressure increase when the vehicle is in motion. Therefore, you should never reduce the pressure of warm tyres. The pressure would then be too low once the tyres have cooled.

The tyre pressure must be adjusted to the load of the vehicle. If the tyre pressure is too low, it may cause the tyre to burst, especially at higher loads and speeds. A tyre pressure that is too high can cause a longer braking distance and a poorer tyre grip.

If the tyre pressure has been incorrectly set, you could lose control of your vehicle, causing an accident and injuring yourself or others.

Check the specified tyre pressure regularly when the tyres are cold. You should do this at least once every two weeks and before long journeys.

Correct the tyre pressure before loading the vehicle. Check tyre pressures after loading the vehicle and correct them as necessary.

  • If the tyre pressure is too low, it can cause excessive tyre temperatures, increased tyre wear, altered directional stability and increased fuel consumption.

  • If the tyre pressure is too high, it can cause a longer stopping distance, poorer tyre grip and increased tyre wear.

  • Valve caps on the tyre valves protect the valve core from moisture and dirt. You must therefore always screw the valve caps tightly onto the tyre valves.

  • If there is repeated pressure loss from the tyres, this may be caused by external damage, foreign objects in the tyre tread or between the tyres (twin tyres), cracks, bulges or leaking tyre valves.

You can find the tyre inflation pressure tables in the "Technical data" section more.

Tyre tread

A minimum tyre tread depth is specified by law. You should observe the respective country-specific legal requirements.

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WARNING

You should always make sure that there is sufficient tyre tread. Low tyre tread depth increases the risk of aquaplaning when driving in heavy rain or slush and at high speeds. The tyre tread is no longer able to route the water away. For example, when the tread depth is less than 3 mm, tyre grip is drastically reduced on wet roads.

You could lose control of the vehicle as a result, cause an accident and injure yourself or others.

For safety reasons, you should have the tyres replaced before they reach the minimum tread depth as specified by law.

Tyre condition

Check the tyre condition regularly, at least once every two weeks and before long journeys, e.g. for:

  • external damage

  • objects in the tread

  • objects between the tyres (on vehicles with twin tyres)

  • cracks, bulges

  • tyre tread depth and one-sided or uneven tread wear. Turn the front wheels inwards to check the inside of the front wheels better. Always check the insides of the tyre tread on the rear wheels too.

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WARNING

Note that cracks, bulges and other damage can cause a tyre to burst. This could cause you to lose control of the vehicle, causing an accident and injuring yourself or others. Have damaged tyres replaced immediately.

Tyre age

Tyres age, even if they are rarely used or not used at all. Operating and driving safety diminishes with tyre age. You should therefore have tyres which are more than six years old replaced. This also applies to the spare wheel.

Tyre damage

Tyre damage can be caused by:

  • the operating conditions of the vehicle

  • tyre ageing

  • kerbs

  • foreign bodies

  • insufficient or excessive tyre pressure

  • weather or environmental conditions

  • contact with oil, grease or fuel

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WARNING

Driving over kerbs or sharp-edged objects can cause damage to the tyre substructure which is not visible from the outside.

Damage to the tyre substructure will not be immediately apparent and can cause the tyre to burst.

You could lose control of the vehicle as a result, cause an accident and injure yourself or others.

Avoid tyre impact with kerbs or parking with part of the tyre tread on the kerb.

Tyre load capacity, speed index and types of tyre

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WARNING

Exceeding the specified tyre load capacity or the permissible speed index can result in tyre damage or tyre failure. You could lose control of the vehicle as a result, cause an accident and injure yourself or others.

For this reason, use only the tyre types and tyre sizes which have been approved for your vehicle. Observe the required tyre load-bearing capacity and permissible speed index for your vehicle.

Note, in particular, the vehicle approval regulations relating to tyres in the country concerned. These regulations may specify certain tyre types for the vehicle, or may prohibit the use of certain tyre types that are permissible in other countries.

In addition, the use of a certain tyre type may be advisable in certain regions and for certain areas of operation. A specialist tyre store, a qualified specialist workshop or any Mercedes-Benz Service Centre will be able to give you further information about tyres.

Retreaded tyres

Retreaded tyres are not tested for Mercedes-Benz and are therefore not recommended. Previous damage can be missed when retreading tyres. Therefore, the use of retreaded tyres means that driving safety cannot be guaranteed to the same extent as if new tyres are used.

Direction of rotation

Tyres with a specified direction of rotation offer additional benefits, e.g. with regard to aquaplaning. You can only take advantage of these benefits if the direction of rotation is observed. The direction of rotation is indicated by an arrow on the tyre sidewall.

Replacing tyres and wheels

  • Only fit tyres and wheels of the same type and make.

  • Only fit tyres of the correct size onto the wheels.

  • Fit new tyres on the front wheels first if tyres of the same size are required on the front and rear wheels.

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WARNING

For safety reasons, Mercedes-Benz recommends that you only use tyres and wheels which have been specially approved for your vehicle by Mercedes-Benz. These tyres and wheels are specially adapted for the vehicle's handling characteristics, comfort and wear, as well as for use with the control systems, such as ABS or ESP®. If you use other tyres and wheels, Mercedes-Benz cannot accept any responsibility for damage which may occur as a result. You can obtain information about tyres and wheels from any Mercedes-Benz Service Centre.

If you fit tyres and wheels other than those tested and recommended for Mercedes-Benz, characteristics such as handling, noise levels, fuel consumption and wear, etc. may be adversely affected. In addition, when driving with a load, dimensional variations and different tyre deformation characteristics could cause the tyres to make contact with the bodywork and axle components. This could result in damage to the tyres or the vehicle.

Run in new tyres at moderate speeds for the first 100 km.

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WARNING

Only interchange the front and rear wheels if they are of the same size. If the interchanged wheels are of a different size, the handling characteristics of the vehicle can change considerably. Operating safety may no longer be guaranteed.

Provided that the vehicle has the same size wheels, they can be interchanged every 5000 to 10,000 km, depending on the degree of tyre wear. Do not reverse the direction of wheel rotation more.

Interchange the wheels before too definite a wear pattern has formed on the tyres. The front tyres typically wear more on the outer shoulder, and the rear tyres in the centre of the tread.

Clean the inside of the wheels thoroughly whenever the wheels are interchanged.

After interchanging wheels, correct the tyre pressures more.

You can find information about changing a wheel in the "Practical advice" section more.

Storing tyres

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Store tyres in a cool, dry and, if possible, dark place. Protect the tyres from oil, grease and fuel.

Never use a high-pressure device to clean the tyres. Otherwise, you could damage your wheels.

Notes

Date of printing:

05/16/2012

Online Owner's Manual [In depth | Safety | Tyres and wheels]

Owner's Manual version: H 09/10

Note: The online Owner's Manual is the latest version available. Deviations between this manual and items specific to your vehicle may occur since Mercedes-Benz constantly adapts its vehicles to the latest technology and modifies design and equipment. Please note that this online Owner's Manual does not under any circumstances replace the printed Owner's Manual which is supplied with the vehicle.