I learned about noise in class when we studied rubber, so I'll go ahead and mention it as one of the characteristics of this material. There is such a thing, and it's fantastic. The change is noticeable, at least in comparison to Nokia and Conti. But the poor durability was a surprise. After having the tires reinflated and rolled, the automobile lasted all winter (about seven months). This actually occurred. However, at the time of "re-entry," the tire pressure was 2.1-.2.2 psi per wheel (Tiguan), which is within acceptable range. The snow and oatmeal that had clogged the wheels melted, the "splatter" soaked into the disk, and now I felt this wonderful bouncing, which I had originally attributed to the wheels being unbalanced. To no use, I washed the wheels. And I was overjoyed when they took off the wheels to check the balance. It has square wheels on all four corners. Just six months of standard pressure storage and you're done, Karl))) Square)] In fact, it's all of them. Rubber is worthless.