Hello, we have short questions about our S-Cross BJ: from 08/16, bought at the end of 2020, as a new car. In principle we are super satisfied with the great car. Has these summer tyres: 215/55 R17 94V with tire pressure sensors (system had already informed us about pressure drop, so we know that there are some) We were now for winter tire purchase at the specialist workshop, which meant for new + storage of the old ones take them 850 €. We only recently got a second baby, thewe This is a lot of money for us just before Christmas, especially since we are slow and slow riders. – so could we buy any (better) winter tyres online, if the exact same name has or do they have to be special? (because of tyre pressure sensors) – will the workshop probably refuse us to change if we have bought the tyres elsewhere? – there are tyres from about 70€ per piece; of course, they are certainly even better processed with 150€ per piece etc, before all for high speeds, but are cheap tires unsafe? We never drive more than 120 and highways only for holidays. – the specialist workshop offered us 215/60 R16, deviates from our designation, is that normal? thanks for your help!