See also:

Tire age
The tire manufacturing date is contained in the tire identification mark: DOT ... 3410 means that the tire was manufactured in the week 34 of 2010. BMW recommends that you replace all tires aft ...

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. ...

Shoulder support
Also supports the back in the shoulder area: Results in a relaxed seating position. Reduces strain on the shoulder muscles. ...