Sorry to hear of your mishap. Who had ever heard of Constancy tires. I swear I don't know what dung heap they get some of those tires from. That being said, we bought the Sailun S637 two years ago. We have about 18,000 miles on them and they still look new. And like Me Again said, with your weight you only need to inflate to 85-90 pounds. We runs ours at 85(12,900 weight when packed and ready to roll) and that seems to work just fine. The only complaint I have heard is that in some areas of the country they are hard to find.