Hi! I have now given my Dailydriver a supposed bargain, a set of turnarounds of a car dealership, as the owner probably converted shortly after the purchase to all-weather. It is Premium Contact II in 185/55/15 with DOT from the end of 2014. Profile is complete 7.5 mm and zero saw tooth is visible/feelable. The tires could also be pulled up super, were still very soft and two tires could be driven even without force weights. (adjustment to 0 grams!) The semperite with 2 mm profile and solid sawtooth were much quieter. I have already tried different air pressures and also changed the wheels in a way and diagonally. It remains with it. What now? The car dealership does not want to take them back, even if I still have no new ones and also hang on to the conversion effort. Martin