[p3k]

Ribadisco che qui si tratta di frenata integrale (non combinata). E non è escludibile.
Riporto dalla cartella stampa:

The new R 1300 GS comes as standard with a twin disc brake featuring two newly developed, radially mounted four-piston fixed calipers at the front and a single disc brake with two-piston floating calliper at the rear in conjunction with BMW Motorrad Full Integral ABS Pro.
Here, the handbrake lever activates the front and rear brakes simultaneously.The foot brake lever now likewise actuates the front and rear brakes at the same time. Full Integral ABS Pro is optimised for on-road and off-road use with an additional set-up that depends on the riding mode. In the ABS Pro settings it is possible to lock the rear wheel via the foot brake lever.