Mercedes-Benz GL-Class: Notes on regularly inspecting wheelsand tires - Operation - Wheels and tires - Mercedes-Benz GL-Class Owner's ManualMercedes-Benz GL-Class: Notes on regularly inspecting wheelsand tires

WARNING Regularly check the tires for damage. 
Regularly check the tires for damage.
Damaged tires can cause tire inflation pressure loss. As a result, you could lose control of your vehicle.
Worn, old tires can cause accidents. If the tire tread is worn to minimum tread depth, or if the tires have sustained damage, replace them.

Regularly check the wheels and tires of your vehicle for damage (e.g. cuts, punctures, tears, bulges on tires and deformation or cracks or severe corrosion on wheels) at least once a month, as well as after driving off-road or on rough roads.

Damaged wheels can cause a loss of tire pressure.

Regularly check the tire tread depth and the condition of the tread across the whole width of the tire. If necessary, turn the front wheels to full lock in order to inspect the inner side of the tire surface.

All wheels must have a valve cap to protect the valve against dirt and moisture. Do not mount anything onto the valve (such as tire pressure monitoring systems) other than the standard valve cap or other valve caps approved by Mercedes-Benz for your vehicle.

Regularly check the pressure of all the tires including the emergency spare wheel or the spare wheel, particularly prior to long trips, and correct the pressure as necessary.

    Notes on driving
    • If the vehicle is heavily laden, check the tire pressures and correct them if necessary. • When parking your vehicle, make sure that the tires do not get deformed by the curb or other obst ...

    Tire tread
    WARNING   Although the applicable federal motor vehicle safety laws consider a tire to be worn when the tread wear indicators (TWI) become visible at approximately 1/16 in (1.6 mm), we r ...

    See also:

    All-Wheel Drive
    It is not necessary to check the all–wheel drive lubricant levels. ► fluid leak is the only reason for fluid loss. If a leak occurs, take the vehicle to the dealer as soon as possible. ...

    Exit Lighting
    The interior lamps come on when the key is removed from the ignition. They turn off automatically in 20 seconds. The lights do not come on if the dome override button is pressed in. ...

    Brake fluid level
    If you notice that the brake fluid level in the brake fluid reservoir has fallen to the MIN mark or less, check the brake system immediately for leaks. Also check the thickness of the brake lini ...