Hello I have been driving for about 1500 km on my golf 5 GTI Dunlop SP Winter Sport 3D bought by the local tyre dealer, Dot is 0109 ok. Before Pirellis were on it, which unfortunately had left, compared with the Pirellis the Dunlops are significantly quieter. The tire size is 205/50 R17 On the last tour around the car I noticed that the vodee tire has slight stollen outbursts, although the wheels have never turned. Dunlop I have not yet written about the problem n. My question: Is such tunnel eruptions (3 pieces) normal? I cleaned the tyre a little bit so that it can be recognized better. Profile depth 7.6 mm, measured with digital messled slide