Hello, I’m a little surprised about the rolling comfort of my Swedes. With changing surface, there is a very different sound setting e.g. with smooth road surface it’s absolutely quiet, with rough surface then very loud, also a poltern is present on bad roads. Have Pirellis as summer tires, and now winter tires are on it-no difference. Is the construction reason and normal (e.g. because of the tight chassis)?, I could not drive a comparison vehicle yet. gru ß Oliver