2008 Mercedes R-Class Owner's Manual - Page 346

Operation Driving instructions Mercedes-Benz recommends winter tires ( page 398) with a minimum tread depth of approximately 1/6 in (4 mm) on all four wheels for the winter season to ensure normal balanced handling characteristics. On packed snow, they can reduce your stopping distance compared to summer tires. Stopping distance, however, is still considerably greater than when the road is not covered with snow or ice. Exercise appropriate caution. Tire speed rating Regardless of the tire speed rating, local speed limits should be obeyed. Use prudent driving speeds appropriate to prevailing conditions. Warning! The factory equipped tires on your vehicle may have a tire speed rating above the maximum speed permitted by the electronic speed limiter. Make sure your tires have the required tire speed rating as specified for your vehicle in the "Technical data" section ( page 529), for example when purchasing new tires. For information on how to identify the tire speed rating on a tire's sidewall, see "Tire size designation, load and speed rating" ( page 384). If you are uncertain about the correct reading of the information given on a tire's sidewall, any authorized Mercedes-Benz Light Truck Center will be glad to assist you. G Even when permitted by law, never operate a vehicle at speeds greater than the maximum speed rating of the tires. Exceeding the maximum speed for which tires are rated can lead to sudden tire failure, causing loss of vehicle control and possibly resulting in an accident and/or serious injury and possible death, for you and for others. ! Avoid spinning of a drive wheel. This may cause serious damage to the drivetrain which is not covered by the Mercedes-Benz Limited Warranty. i For information on speed ratings for winter An electronic speed limiter prevents your vehicle from exceeding a speed of 130 mph (210 km/h). tires, see "All-season and winter tires" ( page 387). For additional general information on tire speed markings on the tire sidewall, see "Tire speed rating" ( page 396). 345