Uniform Tire Quality Grading Standards

A uniform standard to grade the quality of tires with regards to tread quality, tire traction and temperature characteristics. Ratings are determined by tire manufacturers using U.S. government testing procedures. The ratings are molded into the sidewall of the tire.

    See also:

    Engine
    Display messages   Top Up Coolant See Operator's Manual Possible causes/consequences and ► Solutions The coolant level is too low. ► Add coolant, observing the warning notes ...

    Speedometer with segments
    The segments in the speedometer indicate which speed range is available. Cruise control activated: The segments light up from the stored speed to the maximum speed. DISTRONIC PLUS activated: O ...

    Panic alarm
    •► To activate: press button 1 for at least one second. An alarm sounds and the exterior lighting flashes. •► To deactivate: press button 1 again. or •► Inse ...