Today I had “new” Conti Wintercontact TS850 in 205/55 16″ put on by the tyre dealer. Of course I assumed that it was new from this year, when I picked up my car, I unfortunately had to find out that it was from mid 2012 according to DOT number. I had previously asked about the tires here in the forum and read that there were some problems with a spongy driving feeling 2012. If you think the problem was explicitly due to the TS850 from the 2012 production year, Or the car on which they were mounted. Would you go to the dealer and complain?