The BMW S is a series of 4-stroke, inline-four cylinder motorcycles produced by BMW Motorrad from 1981 to 1995. Here are some key points about the bike:
Engine: The BMW S was powered by an air-cooled or liquid-cooled inline-4 engine with displacements ranging from 650cc to 800cc.
Performance: The engines produced between 60 and 100 horsepower, depending on the model year and displacement. Torque output ranged from around 45 Nm (33 lb-ft) to 80 Nm (59 lb-ft).
Transmission: The BMW S used a five-speed manual transmission as standard, with an optional sixth gear in some models.
Chassis: The bike featured a steel tube frame with a telescopic fork and a swinging arm rear suspension.
Brakes: Initially, the bike had drum brakes on both wheels but later models received disc brakes in front.
Safety features: The BMW S included anti-lock braking systems (ABS) as an option from 1988 onwards.
Weight: The dry weight of the bike ranged from around 185 kg (408 lbs) to 205 kg (452 lbs), depending on the model and engine configuration.
Fuel capacity: The fuel tank held between 16.5 liters (4.3 gallons) and 18 liters (4.8 gallons).
Emissions: The BMW S complied with the strictest emissions regulations of its time, making it a clean-running motorcycle.
Variants: Over its production run, the BMW S was offered in various trim levels, including a Sport version that featured upgraded suspension and braking components.
Popularity: The BMW S gained popularity among motorcyclists due to its performance, reliability, and distinctive styling.
Price: When new, prices for the BMW S varied depending on the model year and configuration but ranged from around €7,000 (approximately $7,800 USD) in 1985 to over €12,000 (around $13,500 USD) by 1995.
Production numbers: The exact production figures are not publicly available; however, it is known that more than 60,000 units of the BMW S were produced during its run.
