R 100 RS

1983 BMW R 100 RS Technical Analysis & Specification Breakdown

Built around BMW's touring motorcycle platform, the 1983 BMW R 100 RS pairs a 979 cc (59.7 cu in) air-cooled two cylinder boxer, four-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 70 HP (51.1 kW) at 7,000 rpm while maximum torque reaches 76 Nm (56.1 lb-ft), transferring power to the rear wheel through a 5-speed gearbox and shaft drive (cardan) final drive. With a specific output of 71.5 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 RS measures 247 kg (545 lbs) wet (curb), translating to a power-to-weight ratio of 0.28 HP/kg (3.53 kg per horsepower). Rider ergonomics and chassis geometry center around a 820 mm (32.3 in) seat height — resulting in a taller command-style riding posture suited to medium-to-tall inseams, combined with a 1,465 mm (57.7 in) wheelbase engineered for balanced agility and highway composure. The 24-liter (6.3 US gal) fuel tank paired with a rated consumption of 4.8 L/100 km provides an estimated theoretical range of roughly 500 km (311 miles) between fill-ups, while factory top speed is listed at 193 km/h (120 mph).

Within MotoLibrary's BMW archive, this model family spans 12 indexed model years from 1976 to 1989, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.