1985 BMW K 100 RT
Specifications
- Category
- Touring
- Displacement
- 987.0 ccm (60.23 cubic inches)
- Displacement (cc)
- 987.00
- Engine details
- In-line four, four-stroke
- Power
- 90.0 HP (65.7 kW) @ 8000 RPM
- Torque
- 86.0 Nm (8.8 kgf-m or 63.4 ft.lbs) @ 6000 RPM
- Top speed
- 220.0 km/h (136.7 mph)
- Compression
- 10.2:1
- Bore × stroke
- 67.0 x 70.0 mm (2.6 x 2.8 inches)
- Valves/cyl
- 2.0
- Fuel system
- Injection. Bosch LE-Jetronic
- Fuel control
- Double Overhead Cams/Twin Cam (DOHC)
- Lubrication
- Wet sump
- Cooling
- Liquid
- Gearbox
- 5-speed
- Transmission
- Shaft drive (cardan) (final drive)
- Clutch
- Dry, single plate, cable operated
- Frame
- Tubular steel, open cradle with engine as stressed member
- Front suspension
- Telescopic forks
- Front travel
- 185 mm (7.3 inches)
- Rear suspension
- Single-sided swingarm
- Rear travel
- 110 mm (4.3 inches)
- Front tyre
- 100/90-18
- Rear tyre
- 130/90-17
- Front brakes
- Double disc. Two-piston calipers.
- Front brake Ø
- 285 mm (11.2 inches)
- Rear brakes
- Single disc. Single-piston caliper.
- Rear brake Ø
- 285 mm (11.2 inches)
- Dry weight
- 253.0 kg (557.8 pounds)
- Wet weight
- 272.0 kg (599.7 pounds)
- Seat height
- 800 mm (31.5 inches) If adjustable, lowest setting.
- Length
- 2220 mm (87.4 inches)
- Wheelbase
- 1565 mm (61.6 inches)
- Fuel capacity
- 22.00 litres (5.81 US gallons)
- Colours
- White, silver, red, green
- Starter
- Electric
The 1985 BMW K 100 RT
1985 BMW K 100 RT sits near the top of BMW's touring range, built around the brick-engine platform that replaced the airhead boxers as the brand's long-distance workhorse. This is a bike designed for eating highway miles rather than carving canyons, with a fairing that actually blocks weather, a riding position built for hours in the saddle, and shaft drive that means no chain maintenance on a trip. It's heavy and it feels it at a standstill, but once rolling that weight settles into a stable, unhurried gait that suits two-up touring with luggage better than aggressive road work. The 1985 model carried over without significant mechanical changes from the prior year — buyers comparing it to a 1984 example should focus on mileage, service history, and condition rather than spec differences. Fuel injection and shaft drive were still novel enough in this class to matter, and the K-series reputation for durability holds up. Owners tend to be riders who've done sport bikes and want something that will comfortably cross a continent, plus a growing pool of collectors drawn to the K 100 RT's transitional place in BMW history, valuing clean, well-documented examples over modified ones.
Auction history
| Date | Listing | Price | Mileage | Source |
|---|---|---|---|---|
| May 4, 2026 | Modified 1985 BMW K100RT | $6,700 | — | Bring a Trailer |
| Sep 19, 2025 | 1985 BMW K100RT | $2,800 | — | Bring a Trailer |
| Jun 9, 2025 | Modified 1985 BMW K100RT | $15,501 | — | Bring a Trailer |
| Jan 26, 2023 | 1985 BMW K100RT | $1,900 | — | Bring a Trailer |
