Hello dear motor-talker, when changing on winter bikes I was surprised that when the wheel screws were loosened on the rear right wheel, 2 screws could be loosened very easily. However, since I was very sensitive to a correct tightening moment, I couldn’t explain it. After the wheel was down, the reasons became visible: 2 of the total 5 wheel screws were broken!! Fortunately, I could still turn the “rest” out of the thread without applying much force. It is s I bought “brand rims”, which I bought 18 months ago. So they have now 2 summer seasons behind them. The mileage of the wheels is approx. 30.-35,000km. The wheels are with TÜV parts reports and have of course also been taken off at the TÜV. I can not explain this, but of course have great worry to use these wheels further. One should not imagine what could have happened. By the way, the manufacturer does not react to my emails, which really makes me very Annoyed! A statement would probably have been the least. I would just like to know the reason for the problem! Has any of you ever had similar problems? I really can’t explain this, my vehicle (Mercedes-Benz C-Class of the 204 series with 220CDI diesel engine) is now also not overly powerful or the like. It was of course only used in normal road traffic, not on racetracks or the like. I once attached a picture. Look forward to your opinions!