False statements when buying a car

Hello all, I bought a car at Autohaus X not even 2 months ago. Has Ez 08/20 and at the time about 25,600 km on it? Did the seller ask extra about the tires and brakes, he said everything was still top. Brakes would have probably still 60-70%. Tires would be also good, from KW 18 from 21. Was the days in the workshop at the same car house but in another store. Tires are totally unevenly run off on the inside, you could only see so properly on the lifting stage, therefore he starts to vibrate correctly from 100km/h in the interior. When stepping hard into the brake it squeals very loudly, according to the service consultant, because metal sands on metal what should not be, leftover coverings would probably only be for max 2000-3000km. So according to him disks and dumps were due in front. Statement of him: So a joke is not yet happening within 2 months. I am really speechless and I don’t know what to do. In 3 weeks I have an appointment where I bought it. So expensively I have to keep the tires, so I have to keep quiet.