Hello, with a couple of my 3 year old summer tires, (Dunlop) which were already mounted when buying the car, at the beginning of July this year, they discovered cracks on the tread when changing tyres (i.e. in the profile). The car master advised me not to have these two tires reassembled in the summer, for safety reasons. The cracks were clearly visible. In the worst case they could lead to a tyre pitcher at high speeds. I contacted my Verk affluent/retailer (another dealer, about 1.5 hours drive away) where I bought the car. He refused any replacement. He would accept no costs. I should contact the tyre manufacturer, who should check it. My question: Can the seller so simply reject any responsibility? I trust that the seller checks the tyres carefully at the vehicle check and does not install any defective or defective tyres or load them on the vehicle. t. Is in such a case really exclusively the tyre manufacturer my contact person? How is it with the burden of proof? Is there a special regulation for tires that allows the seller to withdraw himself from the responsibility? Maybe one of you has already experienced something similar or may give me some information about it. For helpful answers I would be grateful. Greetings