BMW S 1000 R 2015 vs. BMW M 1000 RR 2021

The BMW S 1000 R model year 2015 and the BMW M 1000 RR model year 2021 are both high-performance motorcycles from BMW, but they have some significant differences in terms of specifications and features.

Starting with the engine and drive train, both models have an inline four-cylinder engine with the same bore and stroke measurements of 80 mm and 49.7 mm, respectively. However, the BMW M 1000 RR 2021 has a more powerful engine, producing 212 HP compared to the 160 HP of the BMW S 1000 R 2015. The torque output is also slightly higher in the M 1000 RR, with 113 Nm compared to 112 Nm in the S 1000 R. The compression ratio is higher in the M 1000 RR at 13.5, compared to 12 in the S 1000 R. Both models have a displacement of 999 cc.

In terms of suspension, both models feature upside-down telescopic forks in the front and a swing arm with a monoshock in the rear. The front suspension diameter is slightly smaller in the M 1000 RR at 45 mm, compared to 46 mm in the S 1000 R.

BMW S 1000 R 2015

Both models have an aluminum frame, but the frame type differs slightly. The S 1000 R has a twin-tube frame, while the M 1000 RR has a twin-tube load-bearing engine frame. This difference in frame design may contribute to the M 1000 RR's smoother overall package and precise chassis.

The braking system is similar in both models, with double disc brakes in the front and four-piston calipers using radial technology. This provides strong braking power in both models.

In terms of advanced rider assistance systems, the M 1000 RR 2021 has more features compared to the S 1000 R 2015. The M 1000 RR comes with ABS, riding modes, launch control, ride-by-wire, quickshifter, and traction control. The S 1000 R, on the other hand, only has dynamic suspension as an advanced rider assistance system.

In terms of dimensions and weights, the M 1000 RR has a slightly larger wheelbase at 1457 mm compared to 1439 mm in the S 1000 R. The seat height is also higher in the M 1000 RR at 832 mm compared to 814 mm in the S 1000 R. However, the M 1000 RR is lighter with a curb weight of 192 kg, compared to 207 kg in the S 1000 R. Both models have a fuel tank capacity of around 16.5-17.5 liters.

BMW M 1000 RR 2021

In terms of strengths, the S 1000 R 2015 is praised for its powerful and well-controllable engine, powerful braking system, and comparatively comfortable seating position. On the other hand, the M 1000 RR 2021 is commended for its smooth overall package, strong brakes, precise chassis, and noble details that are a joy to behold in the paddock. It also has great responsiveness, a rev-happy engine, and a great torque curve, making it a pleasure to ride.

In terms of weaknesses, the S 1000 R 2015 is criticized for its expensive optional extras, hard chassis, and vibrations in the handlebars. The M 1000 RR 2021 is said to have a price package that is not customer-friendly but sales-friendly. Some riders also mention that the footrests could do with more grip on the track, and a higher and harder seat option would be desirable.

Overall, the BMW M 1000 RR 2021 offers more advanced features, a more powerful engine, and a smoother overall package compared to the BMW S 1000 R 2015. However, the S 1000 R still has its strengths in terms of engine performance, braking system, and seating position.