BMW Motorcycles

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BMW R1100S 1999


BMW R259 Engine Cutaway

Horizontally-opposed Type 259 8-valve oil/air-cooled twin with chain-driven dual high camshafts Lubrication 4.3 US quarts of SG, SH motor oil, also w/CD or CE 
Bore & Stroke 99 x 70.5 mm Ignition Central electronic system with Motronic MA 2.4
Capacity 1085cc Charging system 3-phase alternator 12V 600W (700W optional)
Compression Ratio 11.3:1 Starter
Maximum Power 98 hp @ 7500 RPM Transmission 2.75:1 shaft drive
Maximum Torque 72.5 ft.lbs. @ 5750 RPM
97 Nm at 5750 rpm
Clutch 165mm single-plate, dry, hydraulic actuation
Cam Timing (3mm)
Inlet Open 
Inlet Close 
Exhaust Open 
Exhaust Close

5 degrees after TDC
33 degrees after BDC
27 degrees before BDC
5 degrees before TDC 
2x34 mm inlet & 2x29 mm exhaust
Gearbox 1st 2.05 
2nd 1.60 
3rd 1.27 
4th 1.04
5th 0.90
6th 0.80

BMW R1100GS 1999 Engine Detail

Bosch Motronic MA 2.4 Exhaust 3-way dual converter with oxygen sensor, all-stainless construction.
Frame Cast and welded tubular spaceframe, loadbearing engine.
65.0 degrees steering angle, 100 mm trail.

BMW R1100GS 1999 Rear Wheel

5-spoke aluminum alloy, 
3.50 x17 front; 
5.00 x 17 rear (5.50 optional)
Weight: 229 kg (505 lbs) (221kg dry)
Wheelbase:  2180 mm
Length: 1478 mm
Seat Height: 800 mm (31.5 in)
Ground Clearance:  150 mm
Tyres 120/70-ZR17 tubeless
170/60-ZR17 tubeless
(180/55 for optional 5.50 rear wheel)
Front Suspension BMW Light Telelever with cockpit adjustable damping, gas shock absorber with adjustable damping, 110 mm travel. 3 pounds lighter than previous models. Brakes Front: 4-piston Brembo calipers with floating 305 mm discs
Rear: 2-piston Brembo caliper with 276 mm disc
Rear suspension Paralever,  coil spring and single-tube, gas filled shock absorber; rebound stage continuously adjustable, spring preload with hydraulic adjuster - 130 mm travel. Fuel Capacity 18 litre (4.75 US gallons) (Aluminium tank with enclosed fuel pump).
Other Information      
736 Mandarin
735 Bright Red
716 Midnight Black
Fuel Economy 5.2 l/100km (54 mpg Imperial) at 120 kph.
Top Speed

BMW R1100S Instruments

R1100S Press Release

226 km/h (141 mph)
0-100kph 4.0 seconds
BMW R1100S