BMW has presented new versions of its most iconic models, the GS and RT, for 2019. Following increased engine capacity the models are now known as R1250 GS and R1250RT. The big news, however, isn’t displacement, rather than variable cam timing, which BMW calls ShiftCam.
Variable cam timing provides increased engine performance throughout the rev range as well as reduced emissions and better fuel consumption. BMW also say the already smooth engine has been further refined. BMW’s system varies the intake cam timing and stroke and enables the engine to open intake valves asynchronously, which optimises flow characteristic of the air/fuel mixture resulting in more efficient combustion.
Other technical changes include swapping the roller cam chain in favour of a toothed chain, optimised engine oil supply for better lubrication and cooling, twin jet injectors and a new exhaust system, which is said to produce an impressive sound.
Standard equipment includes two riding modes to change the nature of the bikes according to current circumstances. Further aiding the rider are Automatic Stability Control (ASC) and Hill Start Control.
As is typical with BMW, the options list is a long one. Riding Modes Pro, featuring the additional riding mode Dynamic and Dynamic Traction Control (DTC), and in the R 1250 GS also the riding modes Dynamic Pro, Enduro and Enduro Pro, is available as optional equipment.
DTC helps the rider accelerate in a safe and efficient manner, also with the bike tilted. ABS Pro (part of Riding Modes Pro in the R1250GS, a standard feature in the R1250RT) offers greater safety when braking, even when tilted.
As a new feature, BMW present Dynamic Brake Control (DBC). It is said to provide additional safety when braking, by avoiding unintentional accelerator activation. This is achieved by an override in the engine management reducing drive torque in order to make full use of the braking power at the rear wheel.
GS riders have already been treated with BMW’s take on semi-active suspension, the Dynamic ESA. Now the “Next Generation” Dynamic ESA is available also for the RT as an option. It allows fine-tuned adaptation to the riding conditions providing a balance between comfort and dynamic characteristics. The automatically adjusting suspension also compensated to load automatically.
BMW R 1250 GS and R 1250 RT in a nutshell: