BMW R 1250 GS

BMW
BMW R 1250 GS HP
R 1250 GS
Manufacturer	BMW
Sales description	R 1250 GS
Production period	from 2018
class	motorcycle
design type	Travel enduro
Motor data
Air / water-cooled boxer engine with two cylinders
Displacement  (cm³)	1254
Power  (kW / PS )	100 kW (136 hp) at 7750 min -1
Torque  ( N m )	143 at 6250 min -1
Top speed (  km / h)	219
transmission	Claw-shifted six-speed gearbox integrated in the motor housing
drive	Cardan drive
Brakes	front Ø 305 mm double disc brakes, rear Ø 276 mm disc brake
Wheelbase  (mm)	1525
Dimensions (L × W × H, mm):	2207 × 952.5 × 1412
Seat height (cm)	85-87
Empty weight  (kg)	249
Previous model	BMW R 1200 GS (K50)

The BMW R 1250 GS is an all-terrain, partially faired motorcycle made by Bayerische Motoren Werke . Like all models in the R series, it is powered by a boxer engine and final assembly at the BMW plant in Berlin in Spandau . The travel enduro was announced in a press release on September 17, 2018 and presented on October 3, 2018 at the Intermot two-wheeler fair in Cologne. Delivery started in October 2018.

The internal factory code is, despite extensive modifications to the engine and the new sales designation, as in the previous model (without variable valve control) K50 . The abbreviation GS stands for terrain / street . The K50 is the fifth generation of chassis in the GS series with a boxer engine, which has been built since 1980 .

development

Five years after the introduction of the K50, the engine was revised on the cylinders and cylinder heads . Externally, the R 1250 differs from the R 1200 only in minor corrections to the fairing, inscriptions, different colors and a cockpit with a standard 6.5-inch (16.5 cm) full-color TFT display. The inside diameter of the cylinder (bore) has been increased by 1.5 mm and the stroke by 3 mm, increasing the displacement by 84 cm³ (+ 7%). The maximum torque increased by 18 to 143 Newton meters at 6250 / min, the maximum output to 100 kW (136 hp) at 7750 / min. The oil cooling was adapted to the higher nominal output and the 1 kg heavier silencer was designed in accordance with EURO 5.

Five kilograms more weight than the previous model results, among other things, from a revised crankcase , a heavier crankshaft with wider bearings, new, 700 grams heavier cylinder heads with camshaft adjustment and their actuators . In the camshaft drive, toothed chains that run more quietly are used instead of roller chains and a spur gear drive . The larger pistons require a heavier balance shaft for better smoothness .

Two-stage valve control

The variable, two-stage valve control works with solenoids (actuators) that insert pins into coulisse and thus move the camshaft axially within 5 milliseconds while the inlet valves are closed. At partial load , the valve lift of the two inlets is reduced to 2 and 4 mm and the valves are opened with a 70 ° phase shift. Due to the shifted timing, the intake flow of fuel and air swirls. At higher loads, but at the latest from a speed of 5000 min ⁻¹ , the full load cam is inserted.

construction

drive

The air and water-cooled two - cylinder four-stroke engine generates a nominal output of 100 kW (136 hp) and a maximum torque of 143 Nm at a speed of 6500 min ⁻¹ from a displacement of 1254 cm³ . The two opposite cylinder of the piston engine having a bore mm of 102.5, the piston has a stroke of 76 mm at a compression ratio of 12.5: 1. The two overhead camshafts in the two cylinder heads controlled by cam follower two inlet and two Exhaust valves.

Engine block with right cylinder head

Due to the design, the flat engine has a good mass balance due to the symmetrical movement of the two opposing pistons and is consequently quieter than in-line or V-engines with two or three cylinders.

The crank drive is clockwise, the crankshaft drives the water pump at the front and the alternator at the rear. The shaft is connected to the clutch basket via a pair of gears. The counter-rotating clutch neutralizes part of the tilting torque typical of horizontally mounted boxer engines. The oil pump has two rotors. One rotor generates the oil pressure for the lubrication of the main and connecting rod bearings, the second for the clutch and engine cooling.

In the speed range from 3500 to 7500 revolutions a torque of over 120 Nm is available. The motorcycle accelerates from 0 to 100 km / h in 3.6 seconds and, according to the manufacturer, reaches a top speed of 219 km / h.

Power transmission

The primary drive works with gears. The anti-hopping clutch is operated hydraulically, and the claw-shift, helical gearbox has six gears. The secondary drive is a cardan shaft .

Electrics

The starter battery has a capacity of 12 Ah. The on-board electronics communicate via a LIN and CAN bus with the Electronic Suspension Adjustment (ESA, electronic suspension or chassis adjustment ), with the anti-lock braking system (ABS) and the automatic stability control (ASC) . The throttle position is electronically converted into the corresponding throttle position . The alternator generates a nominal electrical output of 510 watts. An LED headlight with integrated daytime running lights illuminates the route.

Fuel supply

Presentation at the Paris Motor Show 2018

The R 1250 GS has electronic fuel injection with digital engine electronics (BMS-O) and a transistor-controlled spark plug per cylinder. BMW indicates the average fuel consumption of 4.75 liters per 100 km according to the World Motorcycle Test Cycle (WMTC). The fuel tank has a usable volume of 20 liters, of which 4 liters are in reserve. The theoretical range on the country road is 420 km.

The manufacturer recommends the use of unleaded gasoline with a knock resistance of at least 95  octane . BMW has integrated a knock sensor that enables the use of low-quality fuel with an octane number of less than 95 RON. A regulated three-way catalytic converter treats the exhaust gas . With it, the vehicle falls below the emission limit values ​​of the Euro-5 emissions standard . The 2-in-1 exhaust system ends on the right-hand side in a revised rear silencer made of stainless steel with valve control.

landing gear

The chassis is based on a torsion- resistant lattice frame made of steel tubes and has a single-sided swing arm made of cast aluminum with an additional trailing arm ( Paralever ). The front wheel is guided by a fork with a trailing arm ( Telelever ) with a 37 mm standpipe diameter and 190 mm travel. Optionally, a three-stage, electronic suspension adjustment ( English Electronic Suspension Adjustment, ESA ) and a standard vehicle dynamics control ( English Automatic Stability Control, ASC ) are offered. The front support made of magnesium alloy consists of the cockpit instruments, the windshield, the lighting and the "beak". The gross vehicle weight is 465 kg, the maximum payload with standard equipment is 216 kg.

At the front, the R 1250 GS has a double disc brake with a four-piston brake calliper from Hayes Brake, and a disc brake with a single-piston floating calliper at the rear . A standard anti-lock braking system supports the deceleration on both brakes. The motorcycle needs a braking distance of 39.3 meters from 100 km / h to a standstill, which means that it decelerates with an average of 9.8 m / s².

Model development

Factory code	K25	K25	K25	K50	K50
Sales description	R 1200 GS	R 1200 GS	R 1200 GS	R 1200 GS	R 1250 GS
Vehicle key	0307/0317	0303/0313	0450/0460	0A01 / 0A11	0J91 / 0J93
Construction time [1]	2004-2007	2008-2009	2010–2012	2013-2018	from 2019
Nominal power [kW / PS]	72/98	77/105	81/110	92/125	100/136
Max. Torque [Nm]	115		120	125	143
cylinder	screwed on			cast on
Cooling medium	78% air, 22% oil			65% air, 35% water
Flow through	horizontal			vertical
Valve train	hc, rocker arm		dohc, rocker arm
Maximum speed [min −1 ]	7800	8000	8500	9000
Spark plugs per cylinder	2			1
Knock control	No		Yes	Yes	Yes
Throttle	mechanically			electronically
Inlet valves Ø [mm]		36.35	39	40	40
Outlet valves Ø [mm]		31	33	34
Exhaust flap	No		Yes
coupling	a slice, dry			several slices, in an oil bath
transmission	separately			integrated

^[1] Note: The model change at the BMW Spandau plant is usually in October.

Market positioning

The base price at the start of sales was 13,081 euros (net). In the travel enduro class, the 1250 GS has an average engine capacity of over one liter. Competitive models at the time of market launch are:

Manufacturer	Surname	engine	Displacement	kW	PS	Nm	Launch
KTM	KTM 1290 Super Adventure R.	V2	1301	118	160	140	2018
Ducati	Multistrada 1260 Enduro	V2	1262	116	158	136	2018
triumph	Tiger 1200	R3	1215	101	137	121	Nov 2017
BMW	R 1250 GS	B2	1254	100	136	143	Oct. 2018
Honda	VFR 1200 X Crosstourer	V4	1237	95	129	126	2012
BMW	R 1200 GS Adventure (K51)	B2	1170	92	125	125	Oct. 2014
Kawasaki	KLE 1000 Versys	R4	1043	88	120	102	2012
Yamaha	XT 1200 Z Super Ténéré	R2	1199	81	110	114	2010

The BMW R 1200 GS has been leading the German registration statistics since 2004.

Reviews

"The appearance of the new boxer [is] neat, stronger and therefore more coherent."

- Peter Mayer : Motorrad , issue 21/2018

"What she uses to defend itself [against competing models] is not top performance - others have significantly more - but a combination of versatility, unspoilt charm, beefy character, extraordinary drivability and maneuverability with luggage and without, alone or in pairs, which is difficult to copy. on the road or in the field. [...] After the impressions of our first test drives on the road and off-road, the boxer, who is now jamming, climbs to new heights in terms of his parade discipline of reaching through rough terrain. Confident, almost unstoppable, without any jerking under partial load, it goes to work, pulls up just above idle speed. "

- Walter Wille : Frankfurter Allgemeine Zeitung

“The Shift Cam works more harmoniously, more politely and finely, hardly has these annoying grinding noises and turns up more evenly. The background noise is much more pleasant for the driver, but the sound from the exhaust is still full and typical for Boxers. Overall, the new GS sounds more modern and a little quieter. "

- Christoph Lentsch : motorcycle magazine

“With the R 1250 GS, BMW Motorrad shows where Bavaria's expertise lies: in building excellent engines and chassis as well as putting together coherent overall packages. The new Boxer GS, fit for the next homologation standard Euro 5, has become a steam hammer. She should be able to defend her throne as the world's most popular travel enduro over the next few years without any problems. "

- Ulf Böhringer : n-tv

literature

• Patrick Sauter: Nock'n'Roll . In: MO Medien Verlag GmbH (Hrsg.): MO - Das Motorradmagazin . November – December, 2018, ISSN  0723-2616 , p. 36 ff .

Video

• Martin Vielhaber: New BMW R 1250 GS Test 2019 - BMW R1200GS successor experiences Onroad and Offroad on YouTube , September 20, 2018. In: 1000 PS TV . (Video; 22:26 min)
• Christoph Lentsch: BMW R 1250 GS test - does 136 boxer horsepower make the queen of travel enduros even better? on YouTube , September 28, 2018. In: Motorradmagazin . (Video; 12:40 min)
• Ralf Schütze: BMW R 1250 GS 2019: Driving report, technical data, prices on YouTube , September 27, 2018. In: ADAC . (Video; 3:48 min)

Web links

Commons : BMW R 1250  - Collection of Pictures, Videos and Audio Files

• Manufacturer's website
• Product information from the manufacturer

Individual evidence

1. ↑ Press kit: The new BMW R 1250 GS. (PDF; 3 MB) In: press.bmwgroup.com. September 28, 2018, accessed October 11, 2018 .  
2. ↑ BMW Motorrad is showing innovations at INTERMOT in Cologne . In: Autosieger .
3. ↑ Jochen Vorfelder: The heir to the throne. In: Spiegel Online . September 17, 2018, accessed April 16, 2020 .  
4. ↑ ^{a b} Ralf Schütze: Strength cure for the bestseller. In: ADAC . October 16, 2018, accessed October 17, 2018 .  
5. ↑ Ralf Schütze: A big step further. In: Auto Presse. September 19, 2018, accessed October 17, 2018 .  
6. ↑ Jochen Vorfelder: Motorcycle Power Europe. In: Spiegel Online . October 10, 2012, accessed April 16, 2020 .  
7. ↑ ^{a b c} Uli Baumann: More displacement and significantly more flavor. In: motorcycle . September 19, 2018. Retrieved October 27, 2018 .  
8. ↑ ^{a b} SP-X: Driving report: BMW R 1250 GS. In: The world . August 29, 2018. Retrieved October 11, 2018 .  
9. ↑ ^{a b c} Walter Wille: Nockout for the old boxer. In: Frankfurter Allgemeine Zeitung . September 25, 2018, accessed April 16, 2020 .  
10. ^ Stephan Schätzl: BMW R 1250 GS: This is how the new holy cow drives. In: Kronen Zeitung . October 15, 2018, accessed November 13, 2018 .  
11. ↑ iga / dpi: The new BMW R 1250 GS with variable timing. In: Heise online . September 14, 2018, accessed October 14, 2018 .  
12. ↑ About the smoothness of engines . In: e31.net
13. ^ ^{A b} Ralf Schneider: Dinner for Two . In: Motorrad BMW Spezial . No. 3 , 2012, ISSN  0027-237X , p. 12-19 .
14. ↑ Clemens Gleich: The new R 1200 GS is almost perfect. In: The world . April 2, 2013, accessed November 13, 2018 .  
15. ↑ Martin "Vauli" Vielhaber: BMW R 1250 GS Test 2019 - technical data, driving impressions, prices. In: 1000 hp. September 19, 2018. Retrieved October 28, 2018 .  
16. ↑ Peter Mayer: Viewed in light . In: motorcycle . No. 25 , 2018, ISSN  0027-237X , p. 32-43 .
17. ↑ Laura Thomson: BMW First ride: 2019 BMW R1250GS. In: Visordown. October 30, 2018, accessed November 13, 2018 .  
18. ↑ Peter Mayer: Model 2013 and 2012 in a comparison test. In: Motorrad , issue 6/2013. February 28, 2013. Retrieved July 15, 2013 .  
19. ↑ Volker Pfau: You can't get any more all-rounder: BMW R 1250 GS. In: tz . October 4, 2019, accessed April 16, 2020 .  
20. ^ Peter Mayer: New German wave . In: motorcycle . No. 21 , 2018, ISSN  0027-237X , p. 18-28 .
21. ↑ Christoph Lentsch: GS 2019: More displacement, more power. In: Motorrad Magazin. September 19, 2018, accessed November 13, 2018 .  
22. ↑ Ulf Böhringer: bestseller even better? In: n-tv . September 26, 2018, accessed November 13, 2018 .