BMW R 1100 S - 2005 Specifications and Reviews

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About the BMW R 1100 S

Powered by an air and oil cooled 1,085.00cc Boxer flat twin cylinder four stroke engine, producing 98bhp.

The engine is derived from the R1100RS although the compression ratio has been tweaked along with changes to the air intake and forged connecting rods to increase the top speed and power.

Power is delivered to the rear wheel via shaft drive and the engine is a stressed member of the frame, just like the R1100RS

The look is unique with the single sided swingarm, low down Boxer engine, dual under seat exhaust system and asymmetrical headlights. 

Optional extras include 12V socket, 5.5" rear wheel (+0.5") with 180/55 tyre, engine spoiler, sports suspension set-up, tall screen, high handlebars, 2-level heated grips, hard panniers and ABS II.


2002: Front discs were enlarged to 320mm.

BoxerCup Replica (2003): Main differences over the base bike are a revised fourth gear ratio from, wider 5.5" rear wheel with 180/55 tyre, engine spoiler, 60mm higher seat, Metzeler Sportek M1 tyres and Laser exhausts. Like the racing machines it also has a raised chassis with longer spring struts and Carbon Fiber Reinforced Plastic (CFRP) cylinder head covers.

General information

Category:Sport touring
Model:BMW R 1100 S

Engine and Transmission Specifications

Clutch:Single-disc dry clutch, hydraulically operated
Transmission typefinal drive:Shaft drive (cardan)
Cooling system:Oil & air
Fuel control:SOHC
Valves per cylinder:4
Fuel system:Injection. Electronic intake pipe injection/digital engine management: Bosch Motronic MA 2.4 with overrun fuel cut-off, twin spark ignition
Bore x stroke:99.0 x 70.5 mm (3.9 x 2.8 inches)
Engine type:Two cylinder boxer
Capacity:1085.00 ccm (66.21 cubic inches)

Physical measures and capacities

Wheelbase:1,478 mm (58.2 inches)
Overall width:880 mm (34.6 inches)
Overall length:2,180 mm (85.8 inches)
Overall height:1,160 mm (45.7 inches)
Seat height:800 mm (31.5 inches) If adjustable, lowest setting.
Weight incl. oil, gas, etc:229.0 kg (504.9 pounds)
Dry weight:208.0 kg (458.6 pounds)

BMW R 1100 S dimensions and frame

Rear brakes diameter:276 mm (10.9 inches)
Rear brakes:Double disc
Front brakes diameter:305 mm (12.0 inches)
Front brakes:Double disc
Rear tyre dimensions:170/60-ZR17
Front tyre dimensions:120/70-ZR17
Rear suspension travel:135 mm (5.3 inches)
Rear suspension:Die-cast aluminium single-sided swinging arm with BMW Motorrad Paralever
Front suspension travel:35 mm (1.4 inches)
Front suspension:BMW Motorrad Telelever
Trail:100 mm (3.9 inches)
Rake (fork angle):25.0°
Frame type:Three-section composite frame consisting of front and rear section, load bearing engine.

Speed and acceleration

Power/weight ratio:0.4642 HP/kg

Other specs

Fuel consumption pr. 10 km (6.2 miles):4.30 litres (1.14 gallons)
Fuel capacity:18.00 litres (4.76 gallons)

Rider Reviews

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