Hello, I drive a BMW S 1000 RR, built in 2011, I had used it with 19 thousand km, currently it has 27,000 km on the speedometer. I had to have the steering chain replaced already at a mileage of approx. 21,000 km due to wear. This occurred to me extremely early, because I actually assumed a significantly longer durability. My questions: Is it normal that the steering chain wears away so early on in this model? What could be possible causes for this (z In addition, I have for some time a light, but clearly audible clacker, which worries me: It occurs from about 3,000 rpm and remains at higher speeds, but is then harder to perceive. The sound disappears as soon as I pull the clutch. In idle mode it is also to be heard when I turn the engine higher. But not as if I drive Important to know: The chain tensioner was changed recently, so I am not the driver. whether the sound could be related to it or whether there is another cause (e.g. clutch or gearbox). Has any of you had similar experiences or an idea of what it might be?