What can I say. When you need tires you need them. For the first time someone took the time to explain to me why they can no longer be repaired. In our heat tires only last 3 to 4 years after that it's a plus. Mine have lasted since 2008 so I am ahead of the game. So when they get old and you keep repairing then they become weak and could blow out on the highway. Thanks Tom for your help and honesty.