2004 Mercedes CLK-Class Owner's Manual - Page 270

Operation Driving instructions Tires Tread wear indicators (TWI) are required by law. These indicators are located in six places on the tread circumference and become visible at a tread depth of approximately 1⁄16 in (1.6 mm), at which point the tire is considered worn and should be replaced. The tread wear indicator appears as a solid band across the tread. Warning! Warning! G To reduce the risk of personal injury as a result of inadvertent vehicle movement, before turning off the engine and leaving the vehicle always: Keep right foot firmly on brake pedal. Firmly depress parking brake pedal. Move the gear selector lever to position P. Slowly release brake pedal. When parked on an incline, turn front wheels towards the road curb. Turn the SmartKey to starter switch position 0 and remove, or press KEYLESS-GO* start/stop button (vehicles with KEYLESS-GO*). Take the SmartKey or the SmartKey with KEYLESS-GO* with you and lock vehicle when leaving. Warning! G If you feel a sudden significant vibration or ride disturbance, or you suspect that possible damage to your vehicle has occurred, you should turn on the hazard warning flashers, carefully slow down, and drive with caution to an area which is a safe distance from the road. Inspect the tires and the vehicle underbody for possible damage. If the vehicle or tires appear unsafe, have it towed to the nearest Mercedes-Benz Center or tire dealer for repairs. G 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 recommend that you do not allow your tires to wear down to that level. As tread depth approaches 1/8 in (3 mm), the adhesion properties on a wet road are sharply reduced. Depending upon the weather and/or road surface (conditions), the tire traction varies widely. 270