Of course, only the journey to the dealer can bring more accurate information to light, but still the question to you: A few days ago I changed back to the summer tyres (17 inch) and exactly since then my moose has a flap on the left and right side of the bike in case of uneven ground conditions. It seems to come from the chassis?! Sounds quite dull and is a whole piece louder than the normal suspension noise. The car has only 8,000km on the clock – can there be something defective???