BMW K 1600 GTL vs Harley-Davidson Sportster S

The BMW K 1600 GTL (2026) and the Harley-Davidson Sportster S (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 GTL is a touring bike with 1,649 cc, 158.2 hp and 358 kg; the Harley-Davidson Sportster S is a cruiser with 1,252 cc, 120.7 hp and 228 kg. Power-to-weight with the rider: 365.5 hp/ton versus 398.3 hp/ton. On this measure the Harley-Davidson Sportster S is 9% ahead.

In the simulation the BMW K 1600 GTL covers 0-100 km/h (speedometer) in 3.34 s and the Harley-Davidson Sportster S in 2.97 s; the Harley-Davidson Sportster S is quicker by 0.37 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 GTL (with ABS) and 44.7 m for the Harley-Davidson Sportster S (with ABS). The BMW K 1600 GTL stops 3.7 m shorter. Calculated top speed: 226 km/h (estimated from power and drag) versus 194 km/h (manufacturer claim).

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 GTL and model-specific parameters calibrated against published road tests for the Harley-Davidson Sportster S. Open the interactive app (currently in Turkish) to watch the run side by side and change the load.