[GAinaMontana]

I've been running truck and trailer tires of all descriptions for the last 50+ years and have never seen properly aligned and inflated tires wear like the Sailuns on my 5er. I have wear just like what you are experiencing. It started showing at approximately 10k miles. They now have about 30k on them and still have good tread on the center three beads and significant cupping on the outside two beads. They are still preforming great. I will continue to run them as long as possible. BTW, my local tire dealer who sold and installed the Sailuns replaced one free of charge and returned it to his supplier and no one could give an explanation for the cupping on the outside beads on all four tires. The one he replaced is also cupping.