206+ 1.4 hdi (60.000 km) I bought recently had a buzzing sound in my car. my repairman friend said that he was due to the hub balls. changed on Monday. The next day, I realized that the sound increased much more, I went to the rot balancer, said that the front balls we replaced were redistributed and there was no problem with the rear balls. He said, "Replace the hubs together with the particle hub balls." today we changed the front hub balls and the back hubs together. There was no sound for the first 15-20 minutes while coming home and then started again, so there is no change. What do you think might be like there is a very loud humming noise as if I was driving a truck, there was very little noise before changing the balls at first, now I regretted changing too much. I am glad if you show me a way, friends who know how to follow a path. thanks in advance ...