Hello together, I have taken a closer look at the summer tyre test 2013 by ADAC, because I need new summer tyres again. I noticed that the grades of the sub-ranges are no longer directly visible. You have to click on the tyres in the overview to get to the ADAC rating of the sub-ranges. I noticed. All “good” graded tyres were calculated exactly according to this method (page shows explanation. However, on the ADAC page itself is also so visible ) -> Link calculation method to get to the overall grade. As I said the overall grade of the “good” found was correct after purchase. Rounding exactly. All tires that were rated with satisfactory or worse… well, I should say that those who have calculated probably had other numbers or unlisted additional bases available. In the picture attachment an example where at least the overall grade was still satisfactory. Here the source for the tire ADAC Nexen N8000 Here the If you were to recalculate the whole test, based on the correct formula and the grades listed by ADAC, the rating list would look different. I don’t mean to say that ADAC does really make good tyres bad or the other way around. The order of the test results already only the overall scores would be different. The table would look a bit more friendly and the over comments/opinions/explanations/criticism would be softer greeting GBN