BMW R1100GS

{{Infobox motorcycle

|name = BMW R1100GS

|image = File:BMW R1100GS with panniers.jpg

|aka =

|manufacturer = BMW Motorrad

|parent_company =

|production = 1994–1999

|model_year =

|predecessor = R100GS, R80GS

|successor = R1150GS

|class = Dual-sport

|engine = {{convert|1085|cc|cuin|abbr=on}} flat-twin, four valves per cylinder, oil-cooledSchneider & Koenigsbeck, pp. 207
Compression ratio: 10.3:1

|bore_stroke = {{convert|99.0|x|70.5|mm|abbr=on}}

|top_speed = {{convert|121|mph|abbr=on}}

|power = {{convert|80|hp|abbr=on}} @ 6,750 rpm

|torque = {{convert|97|Nm|abbr=on}} @ 5,250 rpm

|transmission = 5-speed shaft drive

|suspension = Front: BMW Telelever
Rear: Single spring / shock absorber

|brakes = Front: Twin 305 mm disc
Rear: Single 276 mm disc
Optional ABS

|tires = Front: 110/80-19
Rear: 150/70-17

|rake_trail =

|wheelbase = {{convert|1509|mm|abbr=on}}

|length = {{convert|2189|mm|abbr=on}}

|width = {{convert|920|mm|abbr=on}}

|height = {{convert|1366|mm|abbr=on}}

|seat_height = {{convert|840|mm|abbr=on}} to {{convert|860|mm|abbr=on}}

|dry_weight =

|wet_weight = {{convert|243|kg|abbr=on}}

|fuel_capacity = {{convert|25|L|abbr=on}}

|oil_capacity = {{convert|3.75|L}}

|fuel_consumption =

|turning_radius =

|climbing_ability =

|related = R850GS

|sp = uk

}}

The BMW R1100GS is a dual-sport motorcycle that was launched in 1993, and manufactured from 1994 to 1999 by BMW Motorrad in Berlin, Germany.Schneider & Koenigsbeck, pp. 64

The bike has a {{Convert|1085|cc|abbr=on}} flat-twin (boxer) engine, first seen in the R1100RS which was launched the year before in 1992, and was the first member of the GS family to use an air- and oil-cooled engine rather than the earlier air-cooled airhead engines which had been used on BMW motorcycles since the R32 in 1923.

{{Anchor|R850GS}}A smaller capacity sister model, the {{Convert|848|cc|abbr=on}} R850GS, was produced from 1996 to 2001.{{Citation needed|date=April 2015}}

In 1999, the R1100GS was superseded by the R1150GS.