Good day, I have so far moved my E90 LCI in winter with 17-tire. Was very comfortable and pleasant. After that I drove a short time as a summer tire 2 months ago 19-tire, was clearly harder. Then I wanted the golden center, 19-tire sold, 18-tire bought, BUT for the first time rims with RFT tires. Already when I bought these very hard felt to me, also very hard. When I mounted them, I could hardly believe it was all so hard, incredible. The car is rock hard, so that I on believe dampers or similar are defective, it is completely uncomfortable, and it runs track grooves extremely after, sometimes it just steers on its own in one direction, if I don’t hold the steering wheel (I didn’t have before). (driving profile: 80% city, on the AB you don’t notice it so extreme, but in the city with all the channel covers etc. already extreme) Now my questions: has someone already had similar experiences, that it differs so much? Opinion question: The tires are bridge stone Potenza RFT, DOT 16 or 17, profile around about 5mm still, would you still drive them and as soon as they have left only then buy new non RFT? or would you already do it now and the tires that are actually still usable replaced by non RFT? Your opinion and experience on this would be very interesting to me. Thank you very much.