Tires of the FIRST equipment not suitable for winter?

The days I received a call from the AH, where I ordered the DUSTER. The young man made me a “great” offer! First he told me that the ERST-equipment tires on the DUSTER would not be suitable for winter … NO, original he said, the tires are not allowed in winter! Then he made me an offer: Complete tires of Bridgestone incl. assembly etc. at the price of over 800 ohre. There would be 5% discount, so I would get the wheels for 780 ohre. However, there would be the wheels “in the back”, whatever that means, and I would have to order SOFORT in order to still enjoy the discounted wheels … Ok, taking into account that “man” with 61 is perhaps slightly dementia-sick and suffers from slight “age-bleadness”, I first thankedly rejected the friendly offer under the note that I had to reconsider the offer and then report again. Of course the indication that the offer would only apply on THIS day did not remain out … I was just on the road and of course I did research immediately after I was back … Result: CONTINENTAL or MICHELIN tyres would be about a good 100 o’clock cheaper than the Bridgestone tyres. The relevant ADAC test, which I consulted, rated the BRIDGESTONE tyres with a GUT. In another test, however, the CONTINENTAL or MICHELIN tyres were VERY GOOD. Be it … maybe I’m stupid, but not stupid! Especially this dealer has me when buying these kind of tyres. I found the statement that the original tyres would not be allowed in winter more than worrying! I don’t know how many people fell for this nonsense. Only, I have had enough experience for it to NOT fall for it and to let myself be impressed by the statement that I had to order directly in order to get the favorable price. Winter tyres YES … but only then I had to get the impression. n, if I want it and can determine the factory and thus the price itself.