BMW Motorcycles

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BMW R1100GS 1998


BMW R259 Engine Cutaway

Type 259 horizontally-opposed 8 valve oil/air-cooled twin with chain-driven dual high camshafts Lubrication 4 US quarts of SG, SH motor oil, also w/CD or CE. Wet sump, high pressure, cartridge filter, oil cooler, splash feed gearbox.
Bore & Stroke 99 x 70.5 mm Ignition Central electronic system with Motronic MA 2.2
Capacity 1085cc Charging system 14 V, 50 Amp Alternator (700 W)
Compression Ratio 10.3:1 Starter Electric
Maximum Power 80 Bhp @ 6750 rpm (60 kW) Transmission Spiral bevel gears, 3.0:1 ratio (33/11) Enclosed shaft with two universal joints and integral torsional damper
Maximum Torque 72 lb.-ft. @ 5250 rpm (97 Nm) Clutch 180mm single-plate, dry, cable actuated.
Cam Timing (3mm)
Inlet Open
Inlet Close
Exhaust Open
Exhaust Close

10 degrees after TDC
36 degrees after BDC
35 degrees before BDC
3 degrees before TDC
2x36 mm inlet & 2x31 mm exhaust
Gearbox 1st gear: 4.16:1
2nd gear: 2.91:1
3rd gear: 2.13:1
4th gear: 1.74:1
5th gear: 1.45:1
Fuel Bosch Motronic MA 2.2 Exhaust Stainless construction. Some markets have catalytic converter.
Frame 3 piece frame, 64 degrees steering angle, 4.33 inches (111 mm) trail. Wheels

BMW R1100GS 1999 Front Wheel

Patented Cross Spoke Wheels
Front 2.50 x 19 MT-H2
Rear 4.00 x 17 MT-H2
Weight: 243kg (535 lbs.) wet
Wheelbase: 2189 mm
Length: 1509 mm (1499mm pre '96)
Seat Height: 840 / 860 mm
Ground Clearance: 200 mm
Tyres 110/80 - R 19 (59H) tubeless
150/70 - R 17 (69H) tubeless
Front Suspension

BMW Telelever Forks

Telelever with central spring strut.
Progressive coil spring. Twin-tube gas-filled. 189mm (7.41") total travel, 5-position preload
Brakes BMW / FAG anti-lock brake system ABS II
Front: 4-piston Brembo calipers with floating 305 mm discs
Rear: 2-piston Brembo floating caliper with 200mm (10.9 in) disc
Rear suspension Paralever swingarm & shaft drive, single shock with variable rebound damping. 200mm (7.9") travel. Adjustable preload and rebound damping. Fuel Capacity 6.3 US gallons (24 liters/5.3 Imp gallons) (Steel tank with enclosed fuel pump). Possibly also avail with plastic tank. Some specs give 5.5 US gals.

R1100GS 1998 Anniversary Model
1998 Special Edition

658 Marrakech Red
Kalahari Yellow ('99)
716 Night black
642 Alpine White ('99)
737 Red/ White (98-99 Special Edition)
Fuel Economy 56mph (90km/h): 51 US mpg (61.3 Imperial mpg/4.6 l/100km)
75mph (120km/h): 39.8 US mpg (47.8 Imperial mpg/5.9 l/100km)
Top Speed
121mph (195km/h)
Standard Features ABS II, integral frame mounted mini fairing with adjustable windshield, cylinder protection, power accessory socket, stainless steel exhaust with catalytic converter, cross spoke wire wheels, adjustable seat, flasher system, RID (rider information display) and saddlebag mounts. Options Saddlebag scuff pads, Saddlebags and bag liners (including color matched lids), 35 liter removable top box, top box liner, tank bag, heated handlebar grips, mud flap, dark windshield, alarm system, BMW U-lock, motorcycle cover, foam handlebar grips, tank bag electrification kit, lighted ignition key, special cylinder protection bars.
R1100GS 1999 model