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BMW S 1000 RR vs Kawasaki Z900

ESTIMATED SIMULATION

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The BMW S 1000 RR (2025) and the Kawasaki Z900 (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 S 1000 RR is a sport bike with 999 cc, 206.5 hp and 198 kg; the Kawasaki Z900 is a naked bike with 948 cc, 122.0 hp and 213 kg. Power-to-weight with the rider: 756.5 hp/ton versus 423.7 hp/ton. On this measure the BMW S 1000 RR is 79% ahead.

In the simulation the BMW S 1000 RR covers 0-100 km/h (speedometer) in 2.84 s and the Kawasaki Z900 in 3.13 s; the BMW S 1000 RR is quicker by 0.30 s. In the 100-0 km/h brake test, braking distance without the 0.3 s reaction time is 36.4 m for the BMW S 1000 RR (with ABS) and 43.7 m for the Kawasaki Z900 (with ABS). The BMW S 1000 RR stops 7.3 m shorter. Calculated top speed: 287 km/h (manufacturer claim) versus 234 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 model-specific parameters calibrated against published road tests for both. Open the interactive app (currently in Turkish) to watch the run side by side and change the load.

Estimated simulationBMW S 1000 RRKawasaki Z900
Classsport bikenaked bike
Engine999 cc948 cc
Power206.5 hp122.0 hp
Wet weight198 kg213 kg
Power-to-weight (75 kg rider)756.5 hp/ton423.7 hp/ton
0-100 km/h (speedometer)2.84 s3.13 s
100-0 km/h braking distance36.4 m43.7 m
Top speed (calc.)287 km/h234 km/h

Data sources and calibration

Specifications: the sources below (manufacturer pages, plus road-test or spec sites where the manufacturer gives no figure). Acceleration, braking and top speed: Moto Kıyas physics simulation (power/torque curve, gearing, drag, traction and wheelie limits, ABS assumption), calibrated against published road tests where available. Estimated, not measured.

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