BMW M 1000 RR 2021 vs. BMW HP4 RACE 2017

The BMW M 1000 RR 2021 and the BMW HP4 RACE 2017 are both high-performance supersport motorcycles from BMW. They share many similarities in terms of engine specifications, suspension, brakes, and advanced rider assistance systems. However, there are some notable differences between the two models.

In terms of engine performance, the BMW M 1000 RR 2021 is equipped with a 212 HP engine, while the BMW HP4 RACE 2017 boasts a slightly higher output of 215 HP. Both bikes have a 999cc inline-four engine with a bore of 80mm and a stroke of 49.7mm. The compression ratios are also similar, with the M 1000 RR at 13.5 and the HP4 RACE at 13.7. Both bikes feature DOHC and four valves per cylinder.

When it comes to suspension, both bikes have upside-down telescopic forks in the front and a swing arm with a monoshock in the rear. The suspension on both models is adjustable for compression, preload, and rebound. The rear suspension is made of aluminum in both bikes. However, the HP4 RACE has a carbon frame, while the M 1000 RR has an aluminum frame. The HP4 RACE's frame is a monocoque design, which contributes to its lower weight.

BMW M 1000 RR 2021

In terms of braking, both bikes feature double disk brakes in the front with a diameter of 320mm. The brakes are hydraulic and use radial technology. The HP4 RACE also has monoblock brakes, which further enhance its braking performance.

Both bikes come with advanced rider assistance systems such as ABS, riding modes, launch control, quickshifter, traction control, and ride by wire. The HP4 RACE has an additional anti-wheelie system, which helps prevent the front wheel from lifting during acceleration.

In terms of dimensions and weights, the HP4 RACE is slightly lighter than the M 1000 RR. The HP4 RACE has a dry weight of 146kg and a kerb weight of 171.4kg, while the M 1000 RR has a dry weight of 170kg and a kerb weight of 192kg. The HP4 RACE also has a slightly smaller wheelbase of 1440mm compared to the M 1000 RR's 1457mm. The seat height of the HP4 RACE is 816mm, while the M 1000 RR has a seat height of 832mm. Both bikes have a front tire width of 120mm and a rear tire width of 200mm, with 17-inch wheels.

BMW HP4 RACE 2017

In terms of strengths, the M 1000 RR is praised for its smooth overall package, strong brakes, precise chassis, and great responsiveness. It also has a rev-happy engine with a great torque curve. The HP4 RACE, on the other hand, is lauded for its perfect engine performance and set-up, fantastic braking performance, and low weight that can be felt in every riding situation. It is also praised for its versatility, as riders of different performance levels can benefit from its advantages. The HP4 RACE also offers a wide range of tuning options for the chassis.

In terms of weaknesses, the M 1000 RR is criticized for its high price package, lack of grip on the track from the footrests, and the desire for a higher and harder seat option. The HP4 RACE has higher service costs compared to conventional motorcycles, although they are lower than comparable production racers. Some riders also find that the HP4 RACE provides too much feedback, making it more suitable for experienced riders.

Overall, both the BMW M 1000 RR 2021 and the BMW HP4 RACE 2017 are high-performance motorcycles with impressive specifications and features. The M 1000 RR offers a smooth and responsive riding experience, while the HP4 RACE excels in engine performance and weight reduction. Ultimately, the choice between the two models will depend on the rider's preferences and priorities.