BMW K 1600 GT vs Harley-Davidson Nightster Special

The BMW K 1600 GT (2026) and the Harley-Davidson Nightster Special (2025) are compared with the same Moto Kıyas physics model under identical conditions: flat dry asphalt, no wind, a 75 kg rider and no passenger. The BMW K 1600 GT is a touring bike with 1,649 cc, 158.2 hp and 343 kg; the Harley-Davidson Nightster Special is a cruiser with 975 cc, 88.5 hp and 225 kg. Power-to-weight with the rider: 378.6 hp/ton versus 295.0 hp/ton. On this measure the BMW K 1600 GT is 28% ahead.

In the simulation the BMW K 1600 GT covers 0-100 km/h (speedometer) in 3.27 s and the Harley-Davidson Nightster Special in 3.17 s; the Harley-Davidson Nightster Special is quicker by 0.10 s. In the 100-0 km/h brake test, braking distance without the 0.3 s reaction time is 41.0 m for the BMW K 1600 GT (with ABS) and 49.1 m for the Harley-Davidson Nightster Special (ABS unknown, class assumption: no ABS). The BMW K 1600 GT stops 8.1 m shorter. Calculated top speed: 226 km/h (estimated from power and drag) versus 180 km/h (estimated from power and drag).

All values are an estimated simulation, not road-test measurements. Technical data comes from the sources listed below; the model uses class-average calibration (no accepted model-specific road test) for the BMW K 1600 GT and model-specific parameters calibrated against published road tests for the Harley-Davidson Nightster Special. Open the interactive app (currently in Turkish) to watch the run side by side and change the load.