Hello, since the end of March I have the Kia pro ceed 1.6 lx with summer package. I am completely thrilled by the car, only now unfortunately a big one comes but: For about 6 weeks the vehicle gives from speed 160 a very loud whistle noise of itself. It is not that this comes from the wind, because it does not slowly become louder but suddenly starts starting from about 160 km/h. I can best describe the sound like this: It sounds like someone immediately on the tires a microphone in of course was immediately in a Kia workshop and then came the usual, namely the demonstration effect. When I drove with the workshop master over the highway, the car did not give a “peep” of itself. I noticed then during my later journeys that this noise only occurs when it is very warm weather, so from about 25 degrees. Must now wait for warm days to drive to the Kia workshop again I hope that this tone will then “report” so that the Master does not think I would suffer from hallucinations. Perhaps someone from you has already had this problem, would be nice if he could inform me then.