Tire Bubble problems of the 2015 Hyundai Genesis

The dealership replaced the original tires on our 2015 hyundia genisis 5. 0 with contiprocontact tires due to a recall on the original hankook tires in June 2016. Since then we have replaced , on six different accatiions,one of the tires . The first two, one front and one rear ,were because of bubbles on the sidewall. The next one was from tread seperation on a rear tire, and the last two ,were front tires, both from blow outs, after hitting small potholes at low speeds on two different accatiions. I have never had problems like this before,and I have been driving for over 50 years. I think these tires are defective and dangerous. Some one needs to do something before people start getting hurt or even killed from them.