BMW R1250RS explained

BMW R1250RS
Manufacturer:BMW
Production:2018–
Predecessor:BMW R1200RS
Engine:1254cc liquid cooled boxer twin with variable valve timing (VVT)
Compression:12.5:1
Top Speed:143mph
Power: @ 7,750 rpm
Torque: @ 6,250 rpm
Transmission:6-speed, shaft drive
Suspension:Front: 45mm inverted fork
Rear: BMW Paralever
Optional electronic adjustment
Brakes:Front:
  • Twin floating 320 mm discs, 4-piston radial calipers

Rear:

  • Single 276 mm disc, double piston floating caliper ABS[1]
Tires:Front:
  • 120/70 R 17

Rear:

  • 180/55 R 17 (LC)Spoked or alloy, tubeless wheels
Wet Weight:243kg (536lb)
Fuel Capacity:18L

The BMW R1250RS is a sport touring motorcycle (Reise Sport) produced by BMW Motorrad. It was unveiled at EICMA in November 2018.[2] Like the other versions of the R-series, which include the R1250RT, R1250R (Roadster) and R1250GS, the motorcycle model is powered by a boxer engine.

Specifications

Powertrain

The air- and water-cooled two-cylinder engine produces a nominal output of 100 kW (136 hp) at 7750 rpm and a maximum torque of 143 Nm at 6250 rpm from a displacement of 1254 cm³. It has a sliding camshaft (shiftcam) that adjusts the timing for the lower, middle and upper speed ranges and changes the intake valve lift.[2] [3] Depending on the position, a partial load or full load cam acts on the valves. A regulated three-way catalytic converter treats the exhaust gas. The engine meets the Euro 5 emissions standard.[2] There is also engine drag torque control (MSR). Consumption in the WMTC cycle is given as 4.75 l/100 km (CO2 emissions are 110 g/km).[4] The magazine Motorrad und Reisen reports from around 3.9 to around 5.3 l/100 km.[1]

Design

The frame consists of a main frame and a rear frame bolted to it, with the engine also serving as a load-bearing element. The R1250RS has an upside-down telescopic fork at the front and a cast aluminum single-sided swingarm at the rear.[1] The chassis is complemented by traction control (Dynamic Traction Control, DTC) and Pro driving modes with driving mode preselection. On request, a semi-active chassis with automatic level control to adapt to the load condition is available.[5]

The R1250RS is equipped with two LED headlights[6] and a 6.5-inch TFT display. The eCall emergency call is available upon request, as are add-on parts milled from solid aluminum.[2] The 6-speed transmission can be equipped with shift support, also known as quickshifter or blipper.[5] The machine has an 18-liter tank (including 4 liter reserve).

Notes and References

  1. Web site: Fahrtest: BMW R 1250 RS . motorradundreisen.de . 2019-07-19 . 2022-06-15.
  2. Web site: Uli Baumann . BMW R 1250 RS auf der EICMA: Sporttourer mit Schaltnockenboxer . motorradonline.de . 2019-01-31 . 2022-06-15.
  3. Web site: BMW R 1250 GS und R 1250 RT . tourenfahrer.de . 2018-09-18 . 2022-06-15.
  4. Web site: Daten & Ausstattung – R 1250 RS . bmw-motorrad.de . 2022-06-16.
  5. Web site: Johannes Müller . BMW R 1250 RS gegen Kawasaki Z 1000 SX: Sporttourer im Vergleichstest . motorradonline.de . 2019-12-16 . 2022-06-15.
  6. Web site: Touren-Test: BMW R 1250 RS . tourenfahrer.de . 2019-08-01 . 2022-06-15.