HDC Hill Descent Control*

See also:

Controls
Almost all functions can be operated in the same manner as they are in the front. Special features of operating the system in the rear are described here. ...

The concept
The system does not measure the actual inflation pressure in the tires. It detects a pressure loss in a tire by comparing the rotational speeds of the individual wheels while moving. In the ev ...

Tire identification marks
Knowledge of the labeling on the side of the tire makes it easier to identify and choose the right tires. Tire size Speed code letter Q = up to 100 mph or 160 km/h T = up to 118 mph or 190 km/ ...