A friendly hello in the round, I have the following problem: On the internet I bought a new set of tires from a large tyre dealer. After mounting in a master workshop one of the tires has burst when balancing. The manufacturer sees as the reason on the sent pictures a mounting error, but can not explain it further. A material error in the production excludes this categorically. The dealer offered me replacement, only honestly said am I am not exactly convinced of the tires due to the defect. Here are the photos of the two (!) defective places (about 15 cm apart) from inside and outside. Have you ever had similar experiences? What do you think, can you fix a new tire, a few weeks old, so that it looks like that?