R 100 R

1991 BMW R 100 R Technical Analysis & Specification Breakdown

At the heart of the 1991 BMW R 100 R sport touring motorcycle, BMW features a 979 cc (59.7 cu in) air-cooled two cylinder boxer, four-stroke configuration. In factory specification, peak output is rated at 60 HP (43.8 kW) at 6,500 rpm, transferring power to the rear wheel through a 5-speed gearbox and shaft drive (cardan) final drive. With a specific output of 61.3 HP per liter, the engine character is indicating a tractable, stress-free state of tune focused on everyday usability and broad torque delivery.

On the scales, the R 100 R measures 228 kg (503 lbs) wet (curb), translating to a power-to-weight ratio of 0.26 HP/kg (3.8 kg per horsepower). The 24-liter (6.3 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 181 km/h (112 mph).

Within MotoLibrary's BMW archive, this model family spans 3 indexed model years from 1991 to 1993, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.